Questions tagged [rgb]

an additive color model using the primary colors red, green and blue to reproduce a wide range of colors.

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4
votes
3answers
2k views

Can all colors be described with RGB?

If one could pick ideal sensitivities for the RGB filters of a camera sensor, would it be possible to capture any color as humans see it?
6
votes
2answers
1k views

Filter for RGB separation and its effect on the image

Looking at Bayer filter of a typical consumer camera, one can easily see that sensitivity of the filter for each color is all over the place. Are there filters similar to Bayer that do a better job at ...
15
votes
2answers
3k views

How do I interpret individual colors on RGB histogram?

I know how to read the Luminosity histogram and I thought that I knew how to read RGB histogram as well, until I saw the following example: The RGB histogram shows exactly the same 3 'spikes'. What ...
47
votes
8answers
15k views

Why do we use RGB instead of wavelengths to represent colours?

As we know, the colour of a particular beam of light depends on its frequency (or wavelength). Also, isn't that the information which is first captured by digital cameras? Then, why do we use formats ...
18
votes
4answers
4k views

Are RGB numeric values equal to CMYK percentages?

are RGB numeric values equal to CMYK percentages?
4
votes
3answers
1k views

What are the RGB primaries in a camera?

More generally, what is the nature of the gamut? Primaries as peak sensitivity don't behave the same as primaries for mixing output. I suppose this is necessary to know for RAW importing and would be ...
3
votes
3answers
7k views

What's the best method to change colours in a photo to another specific color?

What is the best way to change the colours in a photo to a specific colour? Specifically, how can we change the colours using Curves or Levels Layer? Here are few examples for understanding: orange ...
7
votes
3answers
8k views

Can I do “back conversion” of a B&W JPEG to color?

I have a black and white JPEG. It is in fact an RGB image, which means that the color is still there. And I know from past experience that when I shoot B&W with my Canon, the color image is still ...
1
vote
2answers
125 views

Color Calibration on Sharp LC-32LB370U monitor

I'm having trouble trying to fix the color for my Sharp LED monitor. This has been an issue for about a year or so, and I'd still like to use it, but the wrong colors are too distracting. I've gone ...