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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How to use JPG embedded in RAW for color calibration in darktable
My camera (Canon EOS R5) does a great job with colors for the embedded JPG, but I am unable to achieve similar colors (mainly skin tones) when processing the RAW version of the image in darktable.
I ...
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What could cause the solid red/orange effect at the bottom of this picture?
I have observed an unusual effect in an RGB image where a portion of it appears solid color instead of displaying the intended colors (only once). Do you have any insights into what kind of effect ...
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RAW photos appear faded and overexposed in Lightroom Classic
In Lightroom Classic CC 12.2.1 (LR), I've noticed that my images look overexposed and faded compared to viewing them in FastRAWViewer (FRV). Below is an example from FRV:
And here is the same RAW ...
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Why some black and white film require color development process
For example, Ilford XP2 noted C41 on the box instead of d96 or d76, Kodak Black and White even explicitly warned the user "Do not process in B&W chemistry" on the film roll.
Why do these ...
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Interpreting RA-4 sensitometry charts
I'm having problems with interpreting RA-4 color negative paper sensitometry charts, more precisely it's density readings.
Especially what would a spectrometer see with a paper exposed to Dmax.
I see ...
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Can I use a LCD as backlight for acquiring film using a DSLR?
After asking about using a DSLR for acquiring film, I am at the stage of looking for a proper backlight.
I assume a high CRI light source is required to properly reproduce each colours of the film: ...
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Can a 65% RGB laptop display 100% RGB on an external monitor?
If a laptop used for photography editing needs color accuracy, but only scores a color gamut of 90% sRGB and 65% Adobe RGB, can it still emit 100% sRGB and 100% Adobe RGB on a stand-alone monitor that ...
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How can I take two pictures of different lighting conditions to show the color temp differences hat people would see with the naked eye
I am shooting pictures of two different environments with different color temperature of lights and I want to show each environment as it is seen by the naked eye, one being much warmer than the other....
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Separate Monochrome/ Black and White Photos from Colour
Is there a simple utility to organize photos simply by colour or monochrome?
I thought it would be easy, but I havent found anything.
Initially I thought it could be a simple metadata tag. Searching ...
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How to interpret the colours after infrared conversion? [duplicate]
Regarding infrared photography, I'm quite confused about what wavelengths the colours will represent after the infrared filter was removed from the camera.
How do I find out how to interprete the ...
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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 ...
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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 ...
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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 ...
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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 ...
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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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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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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?
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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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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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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 ...
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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 ...
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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?
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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 ...
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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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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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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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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 ...
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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 ...
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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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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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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 ...
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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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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 ...
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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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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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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.
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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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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 ...
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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 ...
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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 ...
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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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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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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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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 ...
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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%...
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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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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 ...
mkmcnxnx
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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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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)?
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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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