Questions tagged [color]

Color is the human perception of light as having different hue, from reds and oranges, through yellows and greens, to blues and violets. Color is a fundamental aspect of the arts and photography.

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2 answers
87 views

How to highlight an area of this photo by its color?

I have no knowledge at all of image editing and analysis, so I beg your help. I have a photo from which I want to highlight the brownest layer, indicated in the red rectangle. This is important ...
4 votes
2 answers
280 views

What is the source of color noise?

Many articles mention color (chroma) noise. However, I cannot find proper information what is the cause of this kind of noise. It looks quite different than the luminance noise, so for this reason I ...
3 votes
2 answers
204 views

How to convincingly add color to jet black eyes

Where I'm from, a large fraction of the population have jet/pitch black eyes with no "texture" to them, or a very dark brown. In cosplay photography (my field), models would simulate ...
0 votes
1 answer
66 views

Why does my photo have red and green patches on it?

I am new to photography, so I ran into a problem when trying to edit a photo in Rawtherapee where my picture looks like it has red and green blotches all over it. I took this photo with ProShot on my ...
1 vote
3 answers
101 views

What factors affect a camera's ability to accurately perceive color?

Camera noob here. I'm really just a programmer who recently became interested in barcodes with multiple colors to represent information, rather than just black and white. This overlaps with cameras ...
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2 votes
1 answer
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Can ImageMagick do channel difference and swap?

In emulating Kodak Infrared Ektachrome (EIR) film (a.k.a. Aerochrome) with images from a full-spectrum-modified digital camera, I want to subtract the blue channel from the red and green channel, then ...
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1 answer
234 views

What is this effect called? And what happens with the colors at that moment?

Right now i saw a video where the color on the legs have this single color level effect. Does anyone know how i can replicate such an effect and what is happening in this picture exactly?
1 vote
0 answers
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Color cast in scanned color negatives

I've been struggling with color cast in film scans for way too long now -almost a year. It's high time I ask for help. The shot below was taken on a Kodak Gold 200, I metered the exposure with a ...
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1 vote
1 answer
189 views

Why do development times for C-41 films with different speeds remain the same?

When you look at development times between B&W films the development times vary when the speed of the film varies. For example: Ilford FP4 Plus with HC-110 dilution B at 20 degrees takes about 9 ...
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1 vote
2 answers
66 views

edge specific color cast removal?

I'm helping to remove background from an image but am finding the edges of the foreground object are experiencing color cast more than other parts of the image. I've tried gimps white balance and it ...
0 votes
0 answers
49 views

Is an M12 lens inferior to other lenses (C-mount) for producing high picture quality?

I have always used C-mount lenses from manufacturers like Kowa. I have been interested in M12 lenses lately, but since they are so small I just assumed the picture quality produced must not be as ...
1 vote
3 answers
152 views

Is it true that a camera sensor will never receive an RGB value of R 0 G 255 B 0?

I read this: https://therefractedlight.blogspot.com/2010/09/imaginary-and-impossible-colors.html "there are no green colors whatsoever which do not also stimulate your red or blue cells, or even ...
1 vote
1 answer
67 views

Why are these color look up tables (Hald CLUT) 1600 x 1600 pixels instead of 4096 x 4096 pixels?

I imagine that exhaustive color look up tables need to be 256 x 256 x 256 = 4096 x 4096 pixels. Is that correct? If so, how are these color look up tables (Hald CLUT) only 1600 x 1600 pixels?
1 vote
2 answers
145 views

The meaning of Y in sRGB color space

In the definition of sRGB color space, https://en.wikipedia.org/wiki/SRGB Is the Y relative luminance in the above table? What does the value of Y equal to 1 for white point mean? The chromaticity ...
0 votes
0 answers
101 views

Would spectral responses of camera pixels be more "raw", more compact and superior to ICC/DCP camera color profiles? If not, why not?

Background: I'm trying to understand the function of camera color profiles (for raw output) in terms of the hardware. I have found lots of web sites that explain the function of camera profiles from a ...
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2 answers
69 views

Major color banding on some photos - Pentax k1 mark ii

I have been in Kenya shooting some properties and staff portraits for 2 weeks. Everything has been working as normal until yesterday when I imported my photos from the day and discovered some major ...
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4 votes
1 answer
122 views

What is Lightroom order of color operation?

Lightroom has several panels to adjust color in your image, what's great, but I am really interested in what Lightroom does behind it. I am curious if Lightroom has a certain order / priority for ...
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1 vote
1 answer
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Coloring Eyebrows in Lightroom CC without Photoshop

I use Lightroom CC (not classic), and my model has requested to change the color of her eyebrows to match her hair colors. No problem, I thought, I could just mask out the blacks in her eyebrows using ...
-1 votes
2 answers
190 views

Why do the colours on this picture look nice?

I don't know anything about photography so forgive my question. I was looking at this particular video clip on youtube and I just really liked the colours. Can anyone explain why? What's this effect ...
1 vote
2 answers
289 views

Why did my developed photos come out discoloured and grainy?

I recently had some film developed on my Pentax K1000 for the first time and my photos came out very strange. I’ve scoured the internet to find similar film photos to figure out why mine came out like ...
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1 answer
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How to correct colour from flash (shooting instant colour photograms)

Not sure if this is quite the right place to post this, as it might also link to colour theory, but I hope someone can help. I have been shooting colour instant photograms using a new back from ...
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0 votes
1 answer
126 views

How to match color range in two photos when colorizing (hue, saturation)?

Consider two outdoors photos taken with different cameras and different cities. You want to include both in the same photo series and therefore need to re-touch them with identical color profiles and ...
1 vote
1 answer
180 views

RawTherapee/ART: How to match these warm colors from the embedded JPEG?

I've been using RawTherapee (and then its fork, ART) for several months, and overall I have been quite satisfied with it. However, there are a handful of scenarios where I'm struggling to achieve the ...
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0 votes
1 answer
124 views

Why only the right hand of the woman is green and different to her skin colour in other parts?

I am wondering how the woman's writing hand is oddly coloured and so much greener than her tint tone on the other hand? Does it have to do with the circuit boards around her writing hand or the ...
1 vote
3 answers
79 views

Image Color Scheme getting faded when opening with MSPaint

I have the following image (have put a screen-grab of the image as its size is more than 2 MB - the original can be downloaded from https://drive.google.com/file/d/1rC2QQBzMhZ8AG5Lp5PyrpkOxwlyP9QaE/...
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3 votes
3 answers
160 views

Capturing then printing color-accurate images

I want to take photos of a few surfaces (wood floors, bricks, etc.) then print them, matching the colors of the actual object (in whatever the lighting conditions are at the moment) as closely as I am ...
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0 votes
1 answer
260 views

Is it true that Canon sensors have half the number of colors than Nikon, Fujifilm or Sony sensors?

Is it true that Canon sensors have half the number of colors than Nikon, Fujifilm or Sony sensors? I read this on Quora.
1 vote
3 answers
265 views

Does colour mixing work with other sets of three colours?

Fellow photographers and I were discussing how to create a positive colour image by overlaying three film BW negatives/positives that were shot using the trichrome process, using three colour filters ...
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1 vote
0 answers
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Quick Whitepoint-based Calculation

I have an LED device that shines exactly one color. I know the RGB of that color, it's rgb(190, 215, 255) on a color-calibrated monitor. I have several other LED devices I'd like to display the same ...
9 votes
6 answers
2k views

Should I shoot color or black and white 35mm film to learn photography fundamentals?

I want to practice composition, or the basics of photography in reality. From what I've read, some people say shoot color, or only shoot black and white to learn composition right. From my personal ...
7 votes
1 answer
375 views

Why color-wheel websites (Adobe...) claim these colors are complementary

I just learn about the different color harmony styles models, and I was playing with Adobe color wheel website using the complementary style, but I'm realizing that the proposed colors are not really ...
8 votes
2 answers
1k views

Pictures uploaded to Facebook display wrong colors, but only in Firefox

I've noticed on several occasions that the colors of my photos are slightly off when uploaded to Facebook. But I noticed this apparently is only in Firefox. Take this photo, for example: https://www....
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3 votes
3 answers
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Times when I don't want auto color correction or auto white point setting

There are times when I have taken pictures in a forest on a sunny day, and the light filtering through the leaves provides a nice green cast that I want to preserve. However, my Nikon Coolpix S9900 ...
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1 vote
1 answer
284 views

Can you match color levels of semi-overlapping layers in GIMP using a single pixel color?

I am putting together fluorescent images taken on a microscope. I have taken sequential images that overlap for anywhere between 20 - 50 pixels at the edges. I have set up grids so that I have perfect ...
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6 votes
1 answer
186 views

What's the point of scanning family photos at a higher resolution for later enlargement other than restoration?

I have a question about an answer on Genealogy & Family History Stack Exchange. According to this blog post found at the Library of Congress: You can scan [photos] at a higher resolution [I'm ...
1 vote
2 answers
1k views

sRGB mode a necessary for monitors?

I was wondering. If there's no dedicated sRGB mode on a monitor, can you still calibrate it to an sRGB color gamut for photo and video color grading? I am referring to the Cooler Master GM34CW with 95%...
0 votes
2 answers
255 views

Nikon D800 color cast

I take pictures with my Nikon D3 for almost a decade now. I recently got a used D800 and I dont like how the colors turn out on some images. They seem to have a slight color cast. Look at the ...
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1 vote
1 answer
543 views

Can a horse look purple (ish)?

It looks a bit Photoshoppy to me, but I am willing to give the OP the benefit of the doubt. According to the original post, (here) this horse is a some mutated roan. I would like to know if this ...
user avatar
14 votes
5 answers
2k views

Why does flash make a brass subject look grey?

I wanted to take a photo of some items I'd turned on a lathe, and lined them up. Photo was taken with an older samsung android phone, so absolutely nothing fancy. There are no filters enabled, the ...
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0 votes
2 answers
7k views

MacBook Pro - Which color profile is more realistic and like life?

On the MacBook Pro, which color profile is more realistic and life like? Color LCD or SMPTE RP 431-2-2007 DCI (P3)?
1 vote
4 answers
601 views

Why do typical imaging sensor colour filter spectral responses differ so much from the human eye spectral response?

It is commonly stated that the spectral response of RGB colour imaging sensors (CIS) is chosen to match that of the human eye. While this is roughly true, when you examine this claim in detail it is ...
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7 votes
2 answers
1k views

Is it advisable to edit photos during the night?

I recently found myself to not have much time editing photos during the day (which I usually do), so I considered doing it during the night. However, I am not quite sure if it should be done. Here are ...
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0 votes
2 answers
231 views

Reduced color gamut on outdoor video with Canon EOS RP

I am trying a new DSLR camera for shooting video. I set white balance to automatic and the result seems to have a poor color gamut compared to either a Nikon DSLR shot outside or to the Canon shot ...
3 votes
4 answers
163 views

What distinguishes natural photos from filtered ones (color theory)?

I have implemented a filter which makes use of RGB color space plus some transformation functions. This filter can be seen here in action. The natural image is obvious to me. // Natural Image // ...
2 votes
1 answer
230 views

Why do my colours completely fade when I merge layers or export to jpeg?

I’ve been working on a colourful image but when I export it to jpeg, the colours are almost gone. Sure, I understand saving in jpeg can lead to change in colour but.. this is the most massive loss of ...
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1 vote
3 answers
211 views

Does light hardness affect color saturation?

I've read in couple of sources that level of hardness of light affects color saturation somehow - harder the light more saturated colors are. Is this actually true or not?
0 votes
1 answer
253 views

Is there a way to equalize all the colors' brightness in Photoshop?

I want to know if there's a way to equalize the brightness of all the colors of an image. Like, I have a color image, I want to make its all colors' brightnesses the same value. Ex - H-43 S-73 B-101 ...
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16 votes
5 answers
7k views

Water behind ships much bluer than rest of ocean

On Wikipedia I have found the following image: The Japan Maritime Self-Defense Force (JMSDF) destroyer JDS Kongō (DDG 173) sails in formation with other JMSDF ships and ships assigned to the USS ...
22 votes
4 answers
7k views

What causes the fake colors of stars on these pictures?

About two years ago I was at a spot with a beautiful night sky with no moon so I tried to get some pictures of the sky. I wasn't well equipped back then, I had a 35mm f1.8 lens and Nikon D50. I didn't ...
4 votes
3 answers
281 views

When soft proofing, why does the image change between relative and perceptual intent when there are no colours out of gamut?

My understanding is that relative intent just clips the out of gamut colours and that perceptual intent scales (compresses?) the colours to make the out of gamut colours fit. It seems to me there is ...
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