Re: dot gain - still more
Re: dot gain - still more
- Subject: Re: dot gain - still more
- From: Marc Levine <email@hidden>
- Date: Thu, 05 Feb 2004 23:11:42 -0500
It is easy to take a profile, assign it to an image in Photoshop, and get
the Lab values that correlate to various single-color output recipes. Bruce
Lindbloom's site offers a calculator to "estimate" dot gain using this
method, based on assumptions that you can substitute parameters in a
standardized equation and effectively trick it into delivering a dot gain
values. I am not disputing the legitimacy of this practice, but knowing only
dot gain still gives you a pretty limited picture the original press
condition. You would still need to know solid densities (I didn't see any
equations on Bruce's site for this because I suspect it can't be done) and
trap wouldn't hurt either. The point is that you could really burn yourself
extrapolating some numbers from a profile and making assumptions about the
remaining attributes by which printers measure press behavior. If it were
me, I would aggressively pursue this information from the "reference"
printer. If you can't get it, think about arranging a press run and
measuring these values for yourself. Your going to waste a lot more than
that on your side trying to get your press where it needs to be for that
supplied profile to help you more than in hurts you.
Marc
--
Marc Levine
Sales Guy
Technical Guy
Monaco Systems / X-Rite, Inc.
www.monacosys.com / www.xrite.com
email@hidden
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