After I got Michael Eddington's neat answer, I became curious about
these greyscale profiles. Apparently you can make a greyscale profile
out of a CMYK one by extracting the black information. But what happens
if one works with a greyscale image the same way as with a colour one?
Is there a problem in using the RGB profiles which are common for color
photo work (sRGB, Adobe, ProPhoto)? I ask this because I received
grayscale Tiffs tagged with the AdobeRGB1998 profile. Lastly, is there
some kind of widely used greyscale profile to convert to? I got two
profiles called GREY-EW18 and GREY-EW22. 18 and 22 look like the gamma
(1.8 and 2.2), but do these two profile correspond to some kind of
standard (EW?)
Thank you,
Ludovico Fischer
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