Science topic

Photography - Science topic

Photography is a method of making images on a sensitized surface by exposure to light or other radiant energy.
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I have written a paper addressing the issue of automatic colorization of black and white photographs. The perspective is an ethical one that addresses both pros and cons. Now I am searching for a peer-reviewed paper to publish my essay.
If you have any recommendations, I would be more than happy to see them.
Details about the paper:
Words: 3000
Style: APA 7
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As the question states, I am currently doing some revisions for a paper on personal branding for artists. Although I have found enough theory in the influencer marketing area, I am interested in more narrowly focused work that focuses on graphic artists and fine art photographers. I am looking for literature references that address the position of the artist in a marketing-driven world. References can be doctoral dissertations, master thesis, bachelor thesis, or articles (not earlier than 2018).
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Dear Eduard,
What a great topic to do research, I wish you all the best. You may have a look at the below articles:
Dana, L. P., & Salamzadeh, A. (2021). Why do artisans and arts entrepreneurs use social media platforms?: Evidence from an emerging economy. Nordic Journal of Media Management, 2(1), 23-35.
Scolere, L. (2019). Brand yourself, design your future: Portfolio-building in the social media age. New Media & Society, 21(9), 1891-1909.
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I address this dilemma to historians and anthropologists. Is it or is it not beneficial to colorize archival photographs using artificial intelligence? When I first discovered this possibility it all seemed beneficial, but after reading more I also saw ethical challenges. I am interested in the perspective of historians and anthropologists, and I am looking for further literature recommendations.
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Sometimes it may be useful to use the method of coloring .. but it does not necessarily have to be successful in all cases
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Some researchers reject the idea of using only high definition pictures for species description but, at least in my case, I find that high definition pictures provides more nformation than most of the drawings and, of course, do not depend on the researcher´s artistic talent.
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It depends very much on the new species you are about to describe, and whether you describe in the macroscopic or microscopic ranges, and whether you have to describe internal or external structures. For descriptions in the macroscopic range, stacking software is most convenient, because you may convey all the useful information in a single picture, whereas the user of a binocular has to turn around his specimen many times to verify its identity with the stacked one.
However, if you need to illustrate microscopic features, such as for example the setation on maxillae of Baetidae or Heptageniidae (Ephemeroptera), you are bound to bidimensional aspects (unless you use SEM), and here, drawings amount very much to the same as photographs (you may even change your colour photographs into black and white drawings by software).
Good drawings (there are unfortunately a lot of bad ones, as there are also bad photographs in the field) are not necessarily artistic, but rather informative: accurate drawings show precisely the distinguishing aspects, easily perceived by an expert human eye, but often much harder to convey by photographs, where they necessitate the use of arrows.
The important feature in describing new species is always this: is anyone else, observing the same new species as you yourself, able to identify it in a non ambiguous way on the basis of your illustrations and not necessarily with the same optical means you have used to produce them? If your illustrative apparatus is very sophisticated, and being the only one to allow the identification of your species and is not reproducible with a different equipment, you would have to validate this as a principle for the whole range of your family, order or genus, and argue why this is so.
As a principle, you should use, whenever possible, illustrations (whatever their source) that are verifiable by anyone else examining the same or similar material. Images produced by stacking software do not always comply with this principle, and should not be used in the magnification ranges of 50x to 100x, where they often produce artificial images not corresponding to what you can actually observe on physical specimens. The photographs you provide for a new species should, as a rule, reproduce exactly the features any other researcher might be able to observe under his own microscopic equipment.
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Sometimes the advance technologies like CT Scan and MRI are available. But the competency to read the results is lack. According to big data technology, is it possible to construct "translation machine" or "scanner" for CT Scan or MRI "graphs/ pictures" into diagnostics statement that can be understood for the common ones ?
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Thank you for your information Rafal Z Slapa
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What is your attitude to paranormal and scientifically unexplained? For example, how do you rate alleged reports of extraterrestial reasonings on Earth, allegedly drawn by aliens on arable fields? How do you rate cases of UFO photography, allegedly found traces of ice man, photos of a plesiosaur allegedly inhabiting Loch Ness, etc.?
Do you think these unexplained phenomena should be researched and scientifically explained whether they are fakes and there is no point in researching such topics?
Please reply
I invite you to the discussion
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I enjoy it. Hence, the research.
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150 apoios no site do Senado Federal para a Fotografia Forense como disciplina da Ciência Forense Brasileira.
A votação segue até 26 de março de 2019. São necessários 20 mil apoios para que a ideia legislativa seja discutida entre os senadores.
O trabalho foi publicado na #RevistaBrasileiradeCriminalística #RBC e apresentado na #InterForensics2017.
"#Segurança é #bemcomum e #responsabilidadedetodos."
Apoie a #FotografiaForense como disciplina da #CiênciaForenseBrasileira. 🙏
A fotografia precisa de representação legal em auxílio à justiça.
O link de votação é este 👍https://www12.senado.leg.br/ecidadania/visualizacaoideia?id=116847
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As in Cuba, Forensic Photography is developed as a discipline and it is taught from the Law career
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Are there any technologies for creating a digital model of a river channel based on unmanned aerial photography (UAV)?
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Interesting topic to be explored. LiDAR's green band do work in shallow and clear water. I guess it is possible to get an accurate underwater DEM.
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For part of my research I am attempting to assess the abundance and diversity of crustaceans in an aquatic habitat. I intend to take picture of the specimens once collected before they are preserved and lose their colour. I mainly wanted to know if there were any specific guideline to taking taxonomic photographs of shrimp e.g. how it should positioned/oriented, should the appendages be positioned in a specific way as well?
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Hi Maizah, I concur with James: each species has a different set of characters, so you will have to study them in advance. I prefer to start taking photo's of living specimens, because they show some behaviour I want to register (see https://nieuwewendingproducties.blogspot.com/2018/03/in-vitro-in-natura.html - http://micksmarinebiology.blogspot.com/2017/10/spookkreeften-determinatietabel.html)
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  • When human perception of society is so largely primarily visual, how could this integral sense be traditionally excluded by a discipline?
  • Can documentation of more everyday patterns of human behaviour create strong socially reflective imagery?
  • In circumstances that would be overwhelming in a lot of ways, i.e. visually, emotionally, psychologically, how do we know where to start?
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... "how do we know where to start?" feel it!
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My 6th-grade son is doing an independent science project for school. He chose to investigate inexpensive ways to view air currents.
In addition to the experimental work, part of his assignment is to interview up to three people who can provide him with knowledge, and help him brainstorm or improve upon ideas. We have already observed that air disturbances having large heat gradients are easily viewed as shadowgraphs. But we need better sensitivity for small gradients, possibly a Schlieren arrangement. In preparation, I have purchased some inexpensive materials that should prove useful: a small 100mm parabolic mirror with a 150mm focal length, a 12-inch diameter Fresnel magnifying lens with a 1-meter focal length, and a big 1x2 meter sheet of retroreflective fabric. Hopefully we can put them to use. If you are willing to be interviewed for 10-15 minutes about experiment ideas, please let me know. Zoom, Skype, Facetime, whatever is preferable. We're in the US Pacific time zone.
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I have a recommendation for someone he might contact....will respond to your email.
You can reach me through email at:
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I have microscopic image having horizontal and vertical resolution 150 dpi and width and height as 1388*1040pxl. I want to change my image in imagej as pxl/um? Plz suggest how can i do this. here image is attached for reference.
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You can use a reference image of a micrometer scale captured using the same setting as your other images and draw a line of known distance on the image using ImageJ and click measure. You will get the measurements in pixels. Use that and convert it to the known distance that you measured.
This document details the steps:
Good luck!
@Sathya
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Some models like NIMA evaluate photos aesthetically, but I believe these evaluations are more based on the basics of photography, like photos being focused and so on. I need to analyze more sophisticated photos.
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Gennaro Vessio Thank you, so far, these are the best sources I've seen.
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I have an object exposed under collimated light ( the object could be in any shape and its orientation can be arbitrary), how can I get the accurate illuminated or shaded surface of the object?
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3dmax
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Gemstone is a kind of sample with special physical appearance. Are there any test methods or instruments recommended for the following situations?
1. Testing gemstone samples with high transparency, small size and strong surface luster
2. We want to study the color change of gemstones under different light sources and illuminations.
3. Some optical effects related to light, such as opal's schiller, Labradorescence, etc.
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David Oulton Sir, could you please list the goniometers that shows a reliable result for measuring luster and its intensity of reflected light in gemstones
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I have just completed my PhD thesis - Adapting Photovoice to Visualise and Influence Environmental Behaviour across Australia, Bangladesh, and China (Monash University - Design), exploring using photovoice methods across multiple geographic sites to facilitate dialog between and amongst these communities using various participatory techniques, specifically with innovation in audience engagement.
The journey has taken me across 17 discrete participatory-action-research cycles
spanning 4 years, where I partnered with 19 local organisations to run 80 workshops, 8 community exhibitions, and 3 community interview events across 4 separate sites spanning Australia, Bangladesh, and China. Over 700 participants attended workshops and collectively created over 500 photo-stories. I focussed on environmental behaviour, but these methods - like photovoice generally - are applicable to a wide range of themes.
Now I have finally emerged from the tunnel of my PhD, I am looking for future opportunities to use these learnings in other projects and connect with like-minded peers.
Thus I am interested to see who else / what other current and future projects are working on similar methodological adaptations in photovoice or related visual methods?
I have attached the full thesis text here if it is useful to others. I am also happy to receive feedback.
thanks and all the best,
Michael Chew
Monash University
Melbourne, Australia
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This is really interesting. I do photovoice research with non-binary young adults. I am currently preparing a study that will have small groups in various locations. Small groups will regularly connect with and report back to the larger collective group. We hope that this allows us to explore region specific issues, along with more broad ones. I'm definitely going to dig into your work!
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Hi,
I need to dye bivalves to bring out the details of the shell and to be able to take good photos. I have heard that there is a gaseous compound that allows this and doesn't damage the samples, but I cannot find any literature on this. Could someone help me? Or do you know any other way to do it?
Thank you very much in advance.
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You can use low-angle "counter" lighting to bring out shell detail
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170 apoios no site do Senado Federal para a #FotografiaForense como #disciplina da #CiênciaForenseBrasileira.
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68 signatures was what I got, with great difficulty, for Forensic Photography as a discipline of Brazilian Forensic Science. This is our third attempt to call for this great responsibility. I am deeply aware of the multidimensional crises that our countries are facing. Digital images are a major social challenge.
The matter is important, I thank you very much for your participation and I would like to invite you Matteo Nioi and Ademir Franco to sign our third petition, in a spirit of solidarity, giving more strength to this representation.
The link follows below. Thank you guys!
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I want to hire a drone to take multispectral photographs of my experimental plot. it will include visual range photography, IR and NIR photography.
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you cab purchase drones in convenient prices from local markets of china
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My PhD includes a remote sensing survey of the Atacama Desert using freely available satellite imagery to detect archaeological sites. So far, I have not found any source of historical aerial photography for my area of study.
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Hi Adrian,
Maybe interesting sources of High Res imagery are:
and
Google Earth
Zoom Earth gives near real-time High Res imagery for Northern Chile from 1999 till now. That's a 21 years time-lapse. Maybe that's enough for your multi-temporal study. You can apply different techniques to find urban land-use changes for Northern Chile.
You can use Google Earth to find the exact geolocations of places which show strong land-use changes at street level.
Success,
Frank
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in terms of the academic inquiry, i am interested in ekphrastic poetry, which is an interdisciplinary genre connecting poetry to art (painting, sculpture, pictures, captions, photography). i am wondering if you could name some poets (from various nationalities) who are indulged in such writings.
moreover, regarding the technical question, how can i be a member of your highly esteemed project?
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the highly-esteemed researchers, thanks for your answers.
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By the effect of light, ferricyanide reduces to ferrocyanide which reacts with ferric ions from ferric ammonium citrate to produce a beautiful, deep blue color known as Prussian blue. However, cupric ferrocyanide has a nice wine red color and I would like to know if by changing ferric ions by cupric nitrate or sulfate solution, the photoreaction still occurs and produces red images instead of blue ones.
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Cool! I will look for chemicals and test new formulas. Then I show you the results. Thank you very much for sharing the information! And thanks for the kindness of expressing yourself in Portuguese.
Best regards
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I want to acquire an A3 scanner for historical aerial photography. I will use these images for digital photogrammetrical reconstruction and the quality and consistency (lack of deformations caused by the scanning process) is essential. After doing some preliminary reading it is still not clear to me what scanning method is better for this purpose CCD or CIS as I have found very different opinions on this subject.
I would be thankful if I could get opinions about this and, if possible, recommendations of good A3 scanners for this task.
Thanks,
Hector
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Thanks for your help with this Tomás Zarza !
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Dear researchers,
I am working to have a vision of the future of aerial photogrammetry. I prefer to obtain reliable documentation.
I would be so appreciative if you introduced me to it.
Thank you very much for your time. Best regards
Ali Madad
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Flying cameras are the best means of aerial photography
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I'm interested in automated algae identification using neural networks. I need compose substantial micro photography dataset of algae generas (most significant of Cyanobacteria, Chlorophyta and Bacillariophyta).
Thank you in advance!
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Automated alge identification using neural networks is a great idea. I played with it few year ago as well :-).
Besides sources mentioned in previous answers https://atlasofcyanobacteria.com/index.php coud be another one.
In general, it is necessary to have reliable and double-verified identifications of micrographs used for machine learning.
I would be a bit cautious with mixing natural material images and photos of cultures, which may look quite different.
Good luck!
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In a camera (photography), the depth of field/view describes a volume within which objects are acceptably in-focus. Can this behaviour be reversed for a projector to allow the same focal setting to project sharp images on screens at slightly different depths? If so, how (i.e. add more optics to expand the DoF of the projector)?
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Assuming that the distance to the screen is to be constant, you may want to reduce the size of the aperture stop. This decreases the NA and therefore increases the DoF. However, this is certainly at the cost of the brightness of the image. And sooner or later the diffraction limited resolution will restrict the image quality. The size (Airy diameter) of the point spread function (image of a 'point source')  is 0.61*λ/NA.
So it is a trade-off between DoF, brightness and diffraction limit.
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If you not Pix4d in what program?
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if you have a stereo pair, I'd say that you have aerial photos, not ortophotos. Ortophotos are created by correcting the terrain distortions on aerial photos.
Creating a DEM from aerial photos is not as simple as we wish. First, remember that only the area where the photos overlap can be reconstructed.
Commercial software like PCI Geomatics or ENVI offer that functionality. Agisoft Photoscan is made for Structure-from-Motion, not traditional photogrammetry, but is very good and not expensive.
pix 4D is a software that is not open-source and I never tested it
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I am planning to add a polarization filter to my bathymetric SfM setup (DJI m600, Sony a6000, 20mm) in order to reduce sun glint.
Do I have to keep a constant angle of the UAV towards the sun?
Will I have to adjust the rotation angle of the filter for every flight? Do you see/know any other issues?
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Yes, polarization filters vary constantly with the angle to the sun; the maximum affect is achieved at 90 degrees to the sun (photographers have a trick using their thumb and index finger). Linear polarizers are more effective than circular polarizers but most autofocus cameras that use through-the-lens focusing require circular polarizers. That said, for aerial SfM work at infinity focus distance, manual focus is preferred if you can fix (tape) the lens in place so linear polarizers can be used (they are also less expensive to purchase). Lastly, even if you use a circular polarizer, be sure to tape the adjustment ring so it doesn't rotate during your photo survey.
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This question comes from my previous question on fire. I have always felt that I have never come across a single photograph or video on fire that truly reproduces fire. Is that a problem with my visual perception or is it some aspect of fire that baffles cameras?
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Usually light from all parts of an object fall on both our eyes equally. But sometimes it happens that pinpoints of light from some parts fall on one eye but not on the other eye. Such objects appear as glittering to our us; at least that is what I understand.
I think the same phenomenon happens when we look at a fire, especially a natural one from burning woods etc.c (less for an electric one). But this does not happen with a photo: both eyes get the same image. I think this is main difference between photo and actual visualization of a fire. I think glittering objects do not truly glitter in a photo; we get such an impression because of psychological association about the glitter of that object.
Narayanan
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How to use biovis portable leaf area meter with software and scanner of photography method
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thank you sir Zoe Getman-Pickering
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Yes, the 21st century can be called the age of photography, graphics, image, etc. because this form of transmission begins to dominate the Internet. In addition, photography can be cultivated and developed professionally or as a hobby, as art, i.e. artistically.
In my opinion, photography can be an art if it is practiced with passion etc. Sometimes a photo that qualifies for the artistic picture of the year is created by chance, like a unique impression captured in light photography.
Impression captured in a complete photograph, accidentally and unchangeable.
Another time, such an exceptional artistic picture arises after many weeks or months of preparation, after many rehearsals, in a unique place, which is not easy to reach and is a big undertaking.
It seems to me that it is similar to many other fields of art.
In view of the above, the current question is: Do you think photography can be art?
Please, answer, comments. I invite you to the discussion.
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Yes, sure. The photo speaks deeper than a lot of words.
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Hi there, first of all thank you for trying to help.
I am pretty stuck with my preliminary research phrase. I would like to know more about behind-the-scene photography for film specifically set photographs. Or the relationship with moving images and stills.
Have a nice day.
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John Alton, one of the most important cinematographers of cinema history (he earned an Academy Award (Oscar) in 1951, for his work in An American in Paris, dir. by Vincent Minnelli), has wrote Painting with Light, his seminal book that has revealed the secrets of the craft (first published in 1949), wich, at the time, has brought him some troubles amongst his colleagues.
Alton, John (2013). Painting With Light. Berkeley and Los Angeles, CA, London: University of California Press, Ltd.
About stills, read: Jacobs, Steven, (2012) [2011], Framing Pictures: Film and the Visual Arts, Edinburgo: Edinburgh University Press, Ltd. [chapter 5]
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We are looking for a backdrop material that will strongly absorb light at 940nm. It's required for Near IR photography of objects in a lab environment. The ideal material should be easy to obtain and relatively cheap. The best we have found so far is the semi-conductive foam that ICs get shipped in, but it's far from perfect.
Also a suitable paint recommendation could work.
Thanks!
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The very good solution could be paint used for paining inner side of optical instruments used to minimize stray light. As far as I remember there is some manufactured by Nextel.
The same paint is often used as high emissvity cover material in the infrared.
Good luck
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I need to analyse images to find patterns and themes. Similarly to what thematic analysis do with text
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Thank you for your responses. I am using NVIVO, it allows me to use text, audio, video, photography and video. The response helped to "name" what I intuitively have been doing.
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Transillumination may differentiate from oxygenated to deoxygenated blood by direct visualisation and photography
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outside of my skill area
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"I am inviting you to submit interesting structural geological snaps and captions in the "Atlas of Structural Geology" (2nd Edition, Elsevier) that will be edited by me. Elsevier has approved this re-edition.
Open to take- natural secondary and primary, and also human-induced structures developed in all scales, acquired by any techniques.
To know the detail or to discuss, please drop me a mail at  
Deadlines:
1. Expression of interest: 30-Sept-2018
2. Submission of contributions: 30-January-2019
Best,
Dr. Soumyajit Mukherjee
Indian Institute of Technology Bombay, INDIA"
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Dear Sir
I have some collection of Field photographs pertaining to my previous project. The following attached field structural photographs are from part of Bastar Craton Central India
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As the quadcoptor has that capability of taking photographs of objects on the ground from various elevated positions.
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I'd say that aerial photography simply means that photos were taken from a camera flying above ground. The opposite would be ground-based photography.
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I have approximately 80 wings from individual plains sharp-tailed grouse that were collected from hunter harvest donations over the past few years. As part of my MSc project I want to age each wing as best possible, and then use some of the feathers for stable isotope analysis.
In doing so I thought it would be useful to take a photo of each wing for the record, and if I can do it properly, contribute the photos to an official archive for other researchers to use in the future.
What is the best kind of setup for taking high quality and useful photographs of avian wings? Besides the obvious (good camera, good lighting, consistent framing), are there any tips for producing high quality avian wing photos?
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Hi, I agree a short telephoto, or even a standard lens, would be best. In the past I've used 90mm and 105 mm lenses for similar work. I've also had good results using a 50 mm standard lens. As already mentioned, depends on what is a comfortable working distance. These focal lengths are for a full frame camera, they'll need converting for smaller sensors. A prime lens will give better quality results than a zoom.
As your work is for archive, I'd recommend using an 18% grey card to get your exposure spot on, so that the tone of the wings is rendered correctly. There is advice on the web on how to use them, but essentially lay the card where the wing will be and under the same lighting conditions. Take an exposure reading off the card with your camera (excluding any background), set the aperture and shutter speed to those readings, replace the card with the wing and take the photo. Use that same exposure for all the wings.
Apologies for the answer by instalments, it's many years since I've done this sort of work.
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I've found out that most technical targets for image quality assessment have their own software (which cost and features vary a lot), but I can't figure out any that I can use for the Universal Test Target.
Since I need to include it within my workflow, accordingly to the Metamorfoze guidelines fot digitizing artworks, I'm pretty sure there must be a solution.
Thanks!
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Hello
I think you found the answer to this (old) question, but if it could help somebody , here is a free software to do the analyse of the UTT :
Thanks
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I am looking for the first instance of the Index used in photography theory (not his examples regarding photography); when/who was the first to use this idea.
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thank you for your help Detlef Ruschin! I will read your last suggestion as well.
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Hi,
does anyone has experience with taking bird UV photos in field? Do you know about scientific articles that would use UV photography in field? I only found studies conducted on museum specimens. I wonder whether field UV photography was already used in field condiditions and what equipment would be needed? Thank you!
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Hi guys!
Nicely descripted ! Silicon is generally sensitive to UV light, however, there are more factors need to be considered. For example construction of the chip (e.g. size of the cells) or sometimes processing in camera even though you are photographing in RAW. You need to consider wavelength of UV? what is the wavelength of the light which is considered as biological effective by your clade - species? You will not detect UV light with 350 nm by any chip, forget it. Just think about some transition of light which need to be described in detail.
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UV Photography can reveal another world. For Photographu in UV light i need some equipment such as filters and etc... 
Has anyone ever conduct any experiments with EOS camera in this fields?
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Hello Mohsen. I have personally converted many digital cameras to infrared and wide spectrum. I wouldn't recommend converting a DSLR because of focusing limitations. Converting a mirrorless camera to UV is a much better idea as both the focusing and image recording are carried out by the same image sensor. I would also suggest converting the camera to wide-spectrum and purchasing an UV filter that is screwed on top of the lens. This way you have flexibility regarding the wavelength. Feel free to contact me if you need more advice.
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literature on photography or the effect of photography on literature.
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Recently a student of mine gifted me a book named Maharashtra Desha in Marathi. It is a book compiled by Udhav Thakare that contains the photographs he clicked all over the state. He has certain beautiful snaps that are areal views. They offer altogether different view from above. It is the book of only kind I suppose. I wished it could talk about the photogrphy experience more in detail but it just gives brief information about the location. Thats all. I am sure this kind of book will be helpful for your project.
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I mean anything about lighting, perspective or ....
The analysis is going to employ on some fine aggregates (smaller than 0.075 micrometers), and the change in the color is the matter of great importance.
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Dear Ebrahim,
It is important to tell what geomaterial do you intend for imaging.
For noise reductions, you can acquire images several times in the same condition of camera, and average their pixel values.
I suggest that take several images from each situation and intensity, and compare their corresponding results, and then set your system with that situation and intensity in which provide best results and go ahead for your next experiments.
Regards,
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before I start trying to dissect out the lateral meristems of my plants  to use in tissue culture, i'd like to know what it looks like. All I see online are cross sectional micro-graphs of the apical meristems.  does anyone have photos or know where I can find some?  thanks steve
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nice photos...thx steve
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Color may be added to concrete by adding pigments-before or after concrete is place-and using white cement rather than conventional gray cement, by using chemical stains, or by exposing colorful aggregates at the surface. Textured finishes can vary from a smooth polish to the roughness of gravel. Geometric patterns can be scored, stamped, rolled, or inlaid into the concrete to resemble stone, brick or tile paving. Other interesting patterns are obtained by using divider strips (commonly redwood) to form panels of various sizes and shapes ­ rectangular, square, circular or diamond. Special techniques are available to make concrete slip-resistant and sparkling.
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Thank you very much for replying Stephen Poon. This information of yours is really helpful. Also, thank you very much for your inputs.
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I am currently replicating a large collection of Japanese trilobites from dental silicone moulds, using dental plaster. I was using a pot of old fashioned photographic opaque to paint them, but it has now ran out, and I am looking for a modern alternative.
Best wishes,
Chris  
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Apologies for the untimely response. I have whitened silicone, plaster and even resin casts (recently made as well as from old museum collections) using ammonium chloride (NH4Cl). I never painted any of them (the silicone casts are light grey) and they all photographed just fine. See the attached figure as an example. Bear in mind that each of the trilobite specimens in these photos are no more than 10 mm long.
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I am taking ultraviolet photos of flowers, after having had a Full Spectrum Conversion to the camera.  The Conversion was professionally done; the company removed a filter that blocked both UV and IR.  To take UV photos of flowers I am adding to the front of a camera a UV pass filter, excluding both visible and IR.  I am not sure if it matters how I set the White Balance in the camera.  I can use trials to see how the appearance of the photos varies with different White Balance settings, but if anyone has experience with this, please don't hesitate to make a suggestion as to how to set the White Balance in a digital SLR for UV photos.  Thank you
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 Personally I would experiment with a range of wb aettings. The best setting will be the one that gives you the image discrimination you seek.
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By looking at videos in the internet, one gets the impression that dslr gimbals are mostly designed to keep the camera stabilized for horitzontal operation but has anyone used them to stabilize the camera vertically (i.e. with the lens pointing up)?
We would be interested in taking handheld hemispherical photos within tree canopies and the only gimbals we have so far identified for vertical operation are sold together with expensive and specialized software.
Any hints would be much appreciated!
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The gimbals i recommended are for recording video. So they use active systems.
There are several model: 1, 2 or 3 axis; and different ranges of possible angles. Some have 360 continuous panning.
In particular, for your purpose there is one model (i believe the G4) that allows setting the camera in a given (arbitrary) orientation, and the gimbal would keep it regardless of how you move the handle.
I'd like to know what you finally find for your purpose. In our case we want to use it (not yet in our hands) to keep stable a spectrorradiometer on board a boat for water measurements with a constant view angle.
Cheers
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Photography and post-processing is being advocated by Trey Ratcliff (http://www.StuckInCustoms.com) as beneficial to self-development, meaning and states of consciousness. I am curious whether there is any research evidence relevant to this idea. I do not mean giving people cameras to record their 'photovoice' (e.g. "A snapshot of the lives of women with polycystic ovary syndrome: A photovoice investigation" by Sophie Williams et al., J Health Psychol, June 2016; vol. 21, 6: pp. 1170-1182). I am referring to the photographer engaging in an existential search for meaning where photograph-taking engages with feelings of truth, beauty and oneness with nature. 
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I think it can be beneficial in all three areas. I certainly find that I can enter something of a flow-state when processing images.
I have found the book "The Art of Contemplative Photography" to be fascinating and helpful in refocussing (pun half-intended) my approach to photography. The website is here - http://seeingfresh.com/ .
I hope that is helpful!
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Hello All! I need some professional advice on getting publishable photos of genitalia BEFORE they are slide mounted. Does anyone have any good home camera set-ups that aren't going to break my bank? My local museum has one, but it's out of commission at the moment... just wondering if anyone has gotten any good photos. It would be for Pyraloid Moths. Thanks!
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There are many options out there these days. I personally use Canon 60D and a 60mm macro lens. I've also used the cheaper version Canon T4 and have gotten great results. So, I would recommend you go to your local specialized photography store and talk to the experts what they would recommend based on your budget. 
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Hints in library perspective please.
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Jim, a recent solution involves self-assembled nanostructures in fusez quartz: http://www.southampton.ac.uk/news/2016/02/5d-data-storage-update.page
My own view is that more obvious and less sophisticated coding should be considered, no doubt at the expense of such extreme storage capacity. Images could be stored as such, with 3 or 4 copies for colour, perhaps embedding a different metal for each primary colour; the colours of spectral lines could be used to indicate the colour coding.
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Considering that I am using a lenses for scientific imaging with spectrographs, I am looking for a good resource to understand all the terminology referred to on the lens. 
In addition, any information to understand lenses and imaging (scientific photography specifically) would be much appreciated. 
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The understood projetação as process between the creation and execution of the projetual method, can be valid other metodológicos resources, instruments and apparatus? It is considered that the photographic tool constitutes valid and relevant resource for the product project, since his technical and functional innovations (digital technologies) can contribute for the professional activity of the designer, of the conception the viabilização of the idea, beside those usual inherent ones in the process of project.
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As an archaeologist and a photographer, that would be an emphatic yes. I study rock art (petroglyphs), my cameras and subsequent photos are my integral tools. They are embedded not only in the projectual method but in the processual methods, the theoretical assumptions and analysis.
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I'm interested in setting up a camera (maybe a wide-angle trail cam) for a distant landslide.  Any recommendations? 
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Hi Marten, 
We have recently used  the Reconyx (http://www.reconyx.com/) PC800 HyperFire Professional Semi-Covert IR with a HyperFire Heavy-Duty Security Enclosure and got some very good results for monitoring glacier changes at a remote site.
Let me know if you need more information. Cheers, Lukas
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Intention is to use a camera shooting every 30 sec and is operational for 12-14 hours
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had a useful and clarifying reply from camdo:
basically, gopro batteries are 3.5-4.5 Wh and standard time-lapse mode requires 1.2-2.1W depending on model (http://cam-do.com/pages/power-consumption-by-gopro-camera-model), so to take pictures with time-lapse with wifi off would allow for 2-3h of operation before the battery fails.
the time-lapse intervalometer of camdo operates from 50sec upwards, so assuming a mean camera connection of 10 sec per frame, it only allows a maximum frequency of 1 frame per minute and at this frequency extends the duration of the battery approximately 6 times (photo only: http://tools.cam-do.com/TimeLapseCalculator.html) at normal ambient temperatures.
finally the have not worked with gopro hero4 session because it does not have the standard hero port 
this means that for photo shooting frequency <1min and duration >2-3h either some home-made solution is required (intervalometer or additional energy source for underwater use).
will keep looking into it, thanks again for the help (and sorry for the muddled reply on variable shooting frequency jerome)     
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 The target is illuminated by a metal-halide lamp that emits UV-VIS light. I have a Rosco Filter transmitting a yellow and UV visual target. When I apply a single 0.15 ND filter the overall intensity of the visual target drops considerably, causing less light to pass through the filter. When 2 (0.15) ND filters were applied even more light was blocked. In both instances, the yellow and UV  portions are magnified in comparison to the other light allowed to pass through. Does that mean that the Yellow and UV light is more saturated?  
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This is what I can already read out of your diagram. (Look at the "wavy" curves on the right side!)
But it would be interesting to characterize the ND filter without having to guess about the influences of the yellow filter.
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The photographic language offers additional, differential and inductive resources for the creation in the project process, beside the technical sketches, drawing, prototypes and others? 
The area projetual prioritizes the functional, esthetic, emotional, symbolic and technological aspects between others, which has been taking the designers to investigate and to implement new techniques for the handling, constitution and interpretation of the images in the project stages.
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Julio, I think photographic language is to enable the world to see the possibilities of manipulating aesthetic qualities in a photo to suit one's perceived idea about how things should appear. Hence, the mental imagery comes into play, probably with the primary purpose of capturing emotions, feelings, or moods that can help in defining the subject. In this way, techniques or processes of achieving such results are not more important than the actual outcome which fulfills the essence of the theme.   
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A CCD camera chip of dimensions 7*7 mm,and having 1024*1024 elements, is focused on a square, flat area, located 0.5 m away. The camera is equipped with a 35-mm lens
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Hi, Mohan
The sensor’s Nyquist rate (the sampling frequency, or maximum resolution you could hypothetically get) for the your camera depend from pixel size of sensor. You should know the type of sensor and the exact size of pixels. Nyquist rate (lpp) = 1/2*pixel pitch, lines per millimeter, although aliasing, colour interpolation and the multiplication of contrast functions reduce the real detail it can actually resolve.
Georgi
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Hi, I have been trying to understand the technical report of obstruction-free photography, find difficulty in understanding the decomposition step. Could anybody plz help me on the same?
Thanks,
Veeru.
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Hi James Martin, thanks for your reply....
plz find the report in below link
Esp I could not understand the eq no 15.
Thanks,
Veeru.
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Can any one please give recommendations for ideal DSLR/ SLR camera (in India) for intraoral and extra oral photography with specifications ?
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"Cameras don't take pictures, photographers do"
I think more importance should be given to the photographic technique rather than camera. I prefer using ring flash to avoid shadows in intra-oral photographs and taking extra-oral photographs in a well-lit (natural light) room against non-shiny background. 
However, most of the journals demand photographs to be at least 300 dpi, so check whether your camera can produce photographs with 300 dpi or not. 
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I'm doing research about the contemporary visual representation of illness and anticipatory grief, specially in SNSs and I'm trying to contextuallice those practices also.
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A blog with a lot of references (in spanish)
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To create a landscape aesthetic quality heat map I'm trying to get a list of all Panoramio photos in an about 2000 Km2 wide study area. My idea is to perform a (kernel?) density analysis in GIS on a point shapefile including all the photo locations. I've used the well-known Panoramio syntax to get the coordinates:
But I've encountered two kinds of problems:
1) Every single output seems limited to 498 records (not only 100 as declared by Panoramio..)
2) The number of photos seems reduced automatically by Panoramio depending on the bounding rectangle extents, so not all the photos within the area are returned, even setting consecutive from-to ranges.
A possible solution could be to loop the above indicated query according to a moving window approach (let's say 0.01x0.01 deg wide) and to merge the results.
Unfortunately I don't have experience on programming..
Any suggestion about how to do this?
Thanks a lot!
Marco
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Thanks a lot, I'll try to follow your suggestions!
Have a nice day
Marco
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Does any one have suggestions of readying related to early photography on the Alps and the Himalayas?
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I would sugest to contact Museo della Montagna  in Torino (http://www.museomontagna.org/it/museo/info-visita.php) , they have quite a good collection! Best D.
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We have built a kind of light source that can produce both continuous and pulsed (500 ns) light. When we tested with the continuous mode (dark room and target was a glass of water and dirt) the target was beginning to shine but in pulsed mode the only thing that we could capture was just a thin arc around that glass (the mixture of water and dirt was completely dark and unseen). But why? In my theory there is not any difference between pulsed and continuous light just in making blurred image or sharp image of a moving object!
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Hi
The advantage of the pulsed mode is that you can overdrive the light source for the time of the shutter opening. However you must carefully match the timing between the shutter and the light pulse.
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It has been suggested to me that researchers can use photo-elicitation to analyse their own photography, however literature seems to suggest that it is normally used when interacting with research participants; the person taking the photographs and the person discussing the images are not one and the same.
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Hello Michael, you can look into this paper "THE METHOD OF PHOTO-ELICITATION FROM A PHENOMENOLOGICAL PERSPECTIVE ". In this case participants was taking photos themselves. Actually as far as I know in the automotive industry sometimes drivers asked to make photos of their cars, before interviewing them. So I believe there is nothing uncommon if respondent and photographer is the same person.
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I prepare questionare surveys about public perception of forest within project http://rafa.frrms.mendelu.cz/en?lang=en. I have ideas about objectives of questionare, but Im looking for rules (methodology) of taking pictures of forest stands structure. What is necessary to take care? Or is it enough to have similar values of exposition, focal distance etc.? I suppose there is necessary to accept diferrence light conditions within forest stands.
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Have you seen the work of Robert Ribe? He used photographs of forest stand structure in his surveys of public perception. He explains the methods well. I am familiar with these two papers of his:
Ribe RG (2005) Aesthetic perceptions of green-tree retention harvests in vista views: The interaction of cut level, retention pattern and harvest shape. Landscape and Urban Planning 73(4):277-293.
Ribe RG (2009) In-stand scenic beauty of variable retention harvests and mature forests in the U.S. Pacific Northwest: The effects of basal area, density, retention pattern and down wood. Journal of Environmental Management 91(1):245-260.
Also, there is this older piece by Hunt ( I am not sure if it goes much into the methods of this). 
Hunt and ? (2000) Aesthetic quality of northern ontario boreal landscapes.
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Gao et al. reported recently in Nature on ultra high-speed photography.
What are some uses for near speed of light photography?
What data are currently available on the use of this type of approach to study transient electrostatics in molecular bonding or rapid changes in biological macromolecules?
Any pertinent references to the chemical literature is sincerely appreciated.
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Another link to more recent research...
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I am fairly new to this type of data analysis, as my study is looking to identify the 'character of place' of two Montana communities. I've done demos with MAXQDA, Nvivo, and Atlas.ti, but am not quite sure which pieces of functionality I should focus on to differentiate the available options. Any insights into a platform that can best handle video and image analysis as well as transcribed qualitative interviews is more than appreciated.
Ease of use/learning curve and ability to produce analysis in a visual friendly way are considerations I would like to emphasize as well. 
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Hi Evan,
NVivo is a great tool for researchers who want to analyze video files, images and interview documents. I'm an online community manager at QSR (makers of NVivo) so my comments may be a little biased :)
Here's how you might approach your analysis:
As you read through an interview you find comments about culture. You create a container (aka node) called 'culture' then drag and drop the comments into the container. Then you watch a video about local theatre, select a segment and drop that into the 'culture' container too. Same goes for images (or just sections of an image). Then, as you go deeper, you can open the 'culture' container and see all the content (video, images, text) in one place - this makes it easier for you to find patterns, make summaries and write up your findings. 
There are some great visualizations (models, charts, word clouds) that you can use to explore your data and present your findings in an engaging way.
To get up and running you can check out the video tutorials on YouTube - https://www.youtube.com/user/QSRInternational
Good luck with your study - Montana is beautiful so I imagine you'll enjoy the ride :)
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I have a polished rock and want to take pictures of the rock. I need to edit the picture resolution and apply some correction and enhancement filters. I'm wondering if someone can tell me what I have to do to get a proper photo i.e. what filters should I apply to my polished rock. 
Thanks in advance for your replies and I appreciate your views.
Karwan
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Scanning is a reliable method for documenting a flat surface as Andreas notes, and clearly he has experience in that practice worth following. My work involves photographing artworks; layers of translucent, transparent or semi-transparent oil paint in varnished paintings I would think present similar problems. You may be dealing with minerals that can be seen beyond the planar surface, and the reflectivity of the polished surface is obscuring them. A single, point-source illumination, projected 45° across the surface may reveal more than the broad beam of the moving scanner light source. If you add polarisation to the point-source light (a flash unit for example, or incandescent lamp, or LED) and the cross-polarise the lens, you will remove reflection from the surface and intensify and saturate the coloration of the specimen. If it is crystalline, the crystals, which have their own polarising effect, may generate distinctive prismatic colour in reaction to the incoming polarised light. A demonstration may be found at 
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I have some hemispherical photograph from forest canopy. the study site has slope and is tilted. I used Gap Light Analyzer 2 for analyses the photographs but in the Calculation Report, the %mask area is too low (~ 0), while i can see topographic mask in the photos. so why? and what is wrong with me?
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Dear Sean Haughian
Thank you so much for your valuable comments.
I think your second comment is accordance with some of my photos.
About the mask scale: in the calculation report and user manual the scale is (%), moreover for example when sky area is 99.9%, the mask is 0.1 hence I think the scale is (%)
Best regards, Ardalan
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I only have seeds.
Family: Fabaceae
Seed length – 0.26 cm
Seed width – 0.33 cm
At the place of collection, herbaceous vegetation was completely dry. In the middle of herbaceous vegetation, I identified some plants of the family Fabaceae. Most of the pods were already open and without seeds. I collected some seeds for species identification, in July, in Guarda, Portugal.
This photography was taken with magnifying glass (200 x).
Maybe someone knows this seed and can help me.
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Though many years ago, I did my doctoral thesis about Vicia amphicarpa and I studied and characterized different Spanish populatins of this wild species. Your seeds look like those of some of my samples. So I would say that they could be of some Vicia species, probably one of the Vicia sativa group and maybe of Vicia amphicarpa. Only with the seeds is very dificult to identify the species, but you can sow them some of them in a pot and observe the plant
Regards
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I would like to quantify a probable slight coloration/pattern change in frogs that were living under different conditions using digital photography. I've read the paper of Stevens et al (2007) about animal coloration studies using photographs and I've been thinking on building a Box that would allow me to take standardized pictures in terms of light. Here the description of my idea and my questions about:
- The Box would be close and have two bulbs at each side, and a fabric in front of them to prevent reflection – like in a Light box – with no other source of light inside of the Box. First, I don't know if the material of the fabric is relevant, and second, before I was I was thinking on using “day ligh lamps” as the frogs are diurnal, but it would get really hot inside of the box and it would be really difficult to transport. So, any other suggestion would be welcome.
- Of course, I would place a Colorchecker next to the animals during the photography sessions.
- I would like to use a glass or a transparent plastic on top of the animal to get “a more 2D photo”, but I don't know if it would be good, because of the reflection and I think some light waves cannot traverse these materials.
- The camera would be place always on the same position (i.e., there would be an “eye” into the box). I don't know much about cameras but if you have any specific non-so-expesive camera model suggestion, it would also be welcome.
Thanks in advance for your suggestions and advices!
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If you research the CRYPTIC coloration, please don't forget that it exists not against humans but against other predators (e.g. birds and carnivore mammals) which colour vision may be very different (e.g. dichromatic or tetrachromatic). I think, the standard digital photography is a bad solution in this case. 
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We are interested in locating scientific papers related to mortuary photographs or postmortems, approached from the perspective of the history of childhood.
An example of this type of work can be found in:
BORRAS LLOP, J. Mª. Fotografía/monumento. Historia de la infancia y retratos post-mortem, Hispania, Vol 70, 234 (2010):101-136.
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Sara, in addition to the photographic records, in Guanajuato there is a museum where mummies from the local cemetery are exhibited, mostly from around the same period as the post-mortem photographs. There are some "angelitos" in the collection.
Here is a web site with more information:
And here is an article that mentions the "angelitos" and their connection to the photographs:
Some infants were buried with little brooms with which, according to local tradition, were to be used by the "angelitos" to sweep the clouds in heaven.
Attached is a recent photo (from http://www.momiasdeguanajuato.gob.mx/img/8.jpg).
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I have a Canon EOS 700D EF-S 18-135 IS STM Kit. It has a lack of closeup shots for small insects. I would like to purchase a macro lens or close up with clear close up shots capacity. I went through the internet search and got some ideas. And at the same, if anyone has reconditioned or used macro lens for the above.
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I do not know what level of magnification you need but I use for bir close-ups a  I use a Canon MP-E 65mm 1-5x. This is a super macro lens.
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EBT2 film2 exposed in the same time and piled up.
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If I understand the question,, you want to irradiate two EBT2 that are together, with no material between them, isn't it?
The answer will depend on the kind and energy of the radiation  and depth of the films. In other words, it will depend on the shape of the percentage depth dose (PDD) curves. If PDD doesn't changes a lot in the thikness of the film (1mm?), there will be not detectable difference between films (for example, for 6MV photons at 10cm depth). But the situation will change in the case of electrons and, even more, for protons or ions, in which there are sharp changes on the PDD curves.