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Re: Black and white negative scanning

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.

I don't think you can tag a Grayscale image with an RGB profile. Photoshop, at least, won't allow it. Were these desaturated RGB files?

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

After playing with grayscale profiles for a bit, I decided I really prefer the results from the Channel Mixer.

rich

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