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Digital BW, The Print

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Re: From RGB to grayscale

2004-08-14 by Tyler Boley

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Nelson
Ricciardi" <nelson_@r...> wrote:
> Hi there guys.
> 
> What profile do you guys use in Photoshop when you convert images
from RGB
> to gray?
> 
> Dot gain x% or gamma 1.8 or gamma 2.2?
> 
> What is the best (generally speaking) option for QTR?

Somewhere in the archives is a relevant discussion. Roy linearizes to
LAB, there is a nearly equivalent dot gain space I can't recall. Might
work best.
Regarding RGB or gray, depends on the source. I shoot B&W film, scan
as gray, it's always gray never RGB. 16 bit important for single
channel files. If the source was monochromatic, I don't see the point
in working in RGB for output requiring a grayscale file. If the source
was RGB and you need to do some channel tricks before going to gray, I
still don't see the point in staying in RGB assuming the workflow has
been hi bit from source all the way through.
Don't forget mode conversions can be as destructive as levels and
curves, do them hi bit too.
Tyler

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