Questions tagged [science]

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3
votes
3answers
244 views

Organize photos for many overlapping projects

I am working with a larger collection of photographs (~10,000) for my PhD thesis (in biology) and I am currently struggling with the organization of these. Sorry, if this question is in the wrong ...
0
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1answer
100 views

What is a good reference for the technological aspects of modern digital photography? [closed]

What is a good readable, technically detailed reference on the technology involved in modern digital cameras, raw file conversion, and digital image processing? (Possibly a complete a complete answer ...
4
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5answers
1k views

Does a long exposure in DSLR camera have a similar effect to a global shutter?

Regular DSLRs make use of mechanical shutters and progressive electrical readouts, and hence images are captured in a rolling shutter. But, when used to capture pictures with a long exposure, where ...
2
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2answers
122 views

How to optimize detection of brightness changes in an immovable object?

My task I want to use a digital camera to capture slow changes of an object for scientific purposes, subject to the following constraints: The camera is a Canon EOS Rebel T5i. The position of the ...
1
vote
1answer
207 views

Calibrating monitor with lab spectrometer

I'm trying to calibrate my monitors. But I'm wondering if I can avoid buying another piece of equipment by using a lab spectrometer (in the past I've always just calibrated by eye). I'm a PhD student ...
3
votes
4answers
428 views

What tiny lens to shorten the focus on a tiny camera?

I'm trying to set up a tiny camera for a tiny science experiment. The camera is an OmniVision OVM6211: It's pretty much a 3mm cube, containing the image sensor and all the lenses. It has a 90º FOV ...
1
vote
3answers
276 views

How to calculate the distance of an object in a photo?

I am going to be carrying out some experiments for school in physics class where I will need to calculate the distance a tennis ball travels. I am going to be filming it, and I was wondering if a ...
0
votes
1answer
145 views

How to get Canon 1200D quantum efficency plot?

I've searched quantum efficency of Canon 1200D and I found some images like here: http://www.deep-sky.co.uk/imaging/dslr/dslr.htm . How these people get quantum efficency plots for mentioned Canon 40D?...
11
votes
2answers
934 views

Raw photo for scientific purpose. How to set white reference to defined numeric L*a*b value?

I need a scientific raw photo for colour analysis. I shot with a reference gray card which has a defined Lab color space L=70*a=0*b=0. I need to balance the photo with L=70 in camera raw. Is it ...
1
vote
2answers
156 views

How can I connect a cheap digital camera to my 1960s spectrometers?

I teach physics at a community college, and for use in our lab course we have a nice set of 1960s spectrometers that each contain a telescope. (For a description of the optics, see my lab manual, lab ...
0
votes
1answer
239 views

What settings should I use on a webcam to get accurate light intensity measurements?

I hope I am not in the wrong place to ask this kind of question since it is more about image acquisition than photography. I have to use a Microsoft Lifecam HD webcam to take snapshots of a laser ...
3
votes
3answers
485 views

Help with Scientific Cannabis photography [duplicate]

I work in a marijuana testing lab in Washington. Part of our workflow is to capture an image of each sample as it is weighed, for later reference/analysis. We're pretty excited to be creating high ...
1
vote
1answer
424 views

Measure rolling shutter severity of image sensor scientifically [closed]

Is there a way how to measure the "severity" of the rolling shutter (RS) effect for a given image sensor? By severity I mean how slow the image read-out is done for every single frame. The slower the ...
0
votes
1answer
203 views

about luminance and illuminance: what is the difference? [duplicate]

First of all, let me say that english is not my first language, so please excuse any mistakes that you could meet from here on out. I read several articles and explanations about luminance and ...
2
votes
5answers
483 views

Does an aperture value exist, where a lens creates a brighter image than the real view?

So (without limitations of the viewfinder for example) looking through the viewfinder creates a brighter image than normal view would be. The lens would then work like a funnel(collects light from ...
5
votes
3answers
476 views

What's the best way to light still-life photos of leaves?

I just want to make a set of still-life photographs of leaves, with totally controlled lighting. I'd like to be as "scientific" as possible, but I don't know how to light my set. Frontal direct lights ...
2
votes
1answer
297 views

Stereoscopic images

Disclaimer: I know this is probably the complete wrong place to ask this. But seeing as there is no Tattoos.stackexchange I will give it a shot because at its core, this question is down a ...
7
votes
2answers
2k views

What is the lowest level of luminous flux a camera can detect?

In the past, I've asked about taking photos of luciferase. Now I'm curious how weak of a light source I can detect. From How many photons per second is one Lumen? on Physics Stack Exchange, I can ...
8
votes
2answers
474 views

What type of camera setup is required to take photos of luciferase?

I'm working with luciferase which has a wavelength of blue 480 nm and I want to be able to take a photo of it. The trouble is, I can see the luciferase glowing in all of its glory in front of me but ...
6
votes
4answers
918 views

What's a fairly simple way of taking a photo through a microscope?

I have a simple microscope, with only one lens (though two eyepieces). Is there any way to do this, without too much money and modification?
8
votes
2answers
3k views

What is “solid angle” and how does it relate to photography?

So, I was hanging out in the chat room, and hear mention of something called "Solid Angle". What is this, and how can it be important?
10
votes
3answers
7k views

What are the consequences of making camera bodies black?

Considering that silver and other camera colors are outsiders, I wonder if there is a specific reason to make black camera bodies. I can think of several "marketing" reasons (discretion, first, or ...
22
votes
4answers
4k views

What are good advanced books on the physics and science of photography?

I am looking for books about the physics of DSLR, including modern photography optics and sensor electronics. If I already have some books on optics and electronics, I have found fairly hard to find ...
18
votes
2answers
15k views

What is the difference between luminance and illuminance?

The more I read about this, the more confused I become. Illuminance, as I understand it, measured in lux, is the perceived brightness of light on a surface. It's what you'd measure with an incident ...
16
votes
2answers
1k views

What is the inverse-square law, and how does it apply to lighting for photography?

I hear photographers talk about the inverse-square law, particularly with reference to lighting. What is this law about, and most importantly, how is it applied to lighting for photography?