It's a bird

by Vian Esterhuizen

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

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2
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2answers
114 views

How do I set the RGB values of my monitor to match 6000K for calibration?

I've read that the Kelvin temperature for my screens should be around 6000K but I only have RGB values for adjusting the colors. Does anyone know what would be the best R, G, B values that match ...
3
votes
3answers
134 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 ...
1
vote
2answers
191 views

What combination of R, G, B lasers will give “White” with a given °K temperature?

Would it be possible to get a "white" lighting of a subject by using 3 different lasers (R, G and B) If so, which wavelengths and proportions should be used ?
2
votes
1answer
371 views

RGB to CMYK in Photoshop without ICC?

Is it possible to convert an RGB image to CMYK without an ICC profile?
7
votes
4answers
2k views

Is there a lossless sRGB to CMYK conversion?

In my quest to print large images, I discovered that most such places, as opposed to photo labs, only accept CMYK images. While I consider myself an image processing expert, I realize there is a ...
12
votes
2answers
1k 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 ...
14
votes
3answers
2k views