BASIC UNDERSTANDING OF COLOUR SPACE
A basic understanding of how colour space works in Capture One, Photoshop, Lightroom etc. can save you some serious time and headache, Here is a breakdown of the differences between LAB, ProPhoto RGB, Adobe RGB 1998, and sRGB.
LAB Color is the benchmark and consists of every possible colour the human eye can perceive, so it’s the standard by which all other colour spaces are compared.
ProPhoto RGB is a newer colour space that has a much wider gamut than the early Adobe RGB and is more in line with modern digital cameras.
Adobe RGB 1998 features a wide gamut and compatibility with many software programs and displays.
sRGB has a narrow gamut but is designed for consistency and compatibility. For this reason, you should NOT use sRGB for fine art prints but do make sure all the photos that are for publishing on the web are sRGB.
CMYK should only be used for printing on material with adjustments settings according to the material being printed on. CMYK colour space works in the opposite way to the additive RGB colour space. In CMYK space the process is subtractive and inks subtract brightness from white (cyan, magenta, yellow and black are known as subtractive primaries) by layering cyan, magenta, yellow and black to achieve a certain hue. DO NOT USE for fine art printing.