2020. 2. 8. 12:25ㆍ카테고리 없음
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This questions is related to Since I found out some of my images are out of gamut of the printing ink+medium I plan to use, I would like to compare. the gamut of my monitor with the gamut of my printing ink+medium to understand which colors are critical and the amount of the difference in gamut for those colors, without using try and fail by working on my photos. the gamut of two different printing media to choose the one that best suit each photo Needless to say that I have ICC profiles for monitor and ink+media.
Is there a free software to compare gamuts? Windows in particular, Mac would be welcome too.
A graphical comparison would be the best choice, since the gamut is a 3D (at least) color space. You don't need any software to compare gamut coverages For what it's worth, you can get the three X-Y chromaticity coordinates from the monitor manufacturer and the three from the ink manufacturer and plot them on a plain X-Y coordinate graph paper.
Connect the apex points with lines and compare/look at them directly. The two shapes will overlap.
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Parts that don't are out of gamut vis-a-vis the other. You can get design specifications for chromaticity coordinates from the manufacturers for any piece or gear or materials from sensors, dyes, inks, and what have you. If you want, you can plot them on full-colour ICI Chromaticity Plot paper.
They look really impressive. RGB shapes are tri-angular as they have three apexes and CMYK shapes are trapezoidal as there are four apexes. There is one apex for each of the pigment axes.
This is not the same as a spectral emission density curve showing relative responses at different wavelength.