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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.
504 questions
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How to handle horizontal banding after demosaicing and adapt CCM to changing illumination?
I’m working on color correction starting from a RAW image and I’m facing two main issues:
After demosaicing, I notice horizontal banding artifacts that become very noticeable once the image is ...
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Yellow color cast after RAW RGGB demosaicing and color correction – what's wrong with my pipeline?
I'm developing a RAW to RGB conversion pipeline in Python for my sensor (I am a begginer so maybe I am missing something), starting from an 8-bit grayscale RGGB Bayer image (no embedded metadata). My ...
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4
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140
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Why are some RGB values lower on a brighter image?
I have a test scene, which I shot both with a white sheet in the background and with a black sheet in background. The background is the only thing that changes between the images. Both photos were ...
- 113
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Does grey card/color checker make sense when scanning
I need to scan hundreds of old photos and documents, and I care about capturing the original look as much as possible (including paper and ink tint). I use a flatbed scanner. Does it make sense to use ...
- 302
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Post-processing RAW image: Trying to match my camera’s output (specific colour tone on rocks, lightening shadowed area)
I shot a raw photo (Sony Alpha-5100) of a landscape. I like the camera’s automatically-generated jpg image, and I’m struggling to recreate the effect by processing the raw image. (I’m using Darktable, ...
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How does exposure time and ISO affect hue?
There appears some glitch in my processing of raw files and they aren't shifted. Still, raw histogram shows there are indeed differences and even if not here, now I know how and when it could happen. ...
- 245
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2
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How to measure brigthness and hue in Photoshop CS6?
Used "Curves" layer and color checker card (within the picture) to adjust black and white. Not really sure how to give reference RBG values of the card to the program.
Also, not sure how to ...
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4
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Why the color is different in two pictures in similar conditions and setting?
I have two pictures taken today with my Nikon ZFC MILC + Nikkor Z 50mm 1.8S lens. The photos were shot in the morning at around 7:30, it was cloudy and raining slightly (you can see the water drops on ...
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Can Adobe Lightroom reproduce vibrant Canon colors?
I understand that Canon cameras typically create very vibrant colors. I can observe these vibrant colors in the JPEG pictures my EOS RP and R6 creates. I can also observe these vibrant colors when I ...
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Cameras with more than 3 color channelsa (ideally 12) and digital formatting
Apologies in advance for the superficial knowledge. I'm doing some sleuthing to help a friend who's about to do a research project and I showed him research on UV photography to find invsibile ...
- 103
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Color film developing issues
There's no problem with my camera, however when I try to develop color film, my negatives are consistently very dark. I am using CineStill and following the instructions exactly, to include push times ...
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2
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509
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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 ...
- 151
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2
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136
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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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1
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1
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672
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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 ...
- 382
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2
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526
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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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