UCR (was: New SNAP Standard (GCR instead of UCR))
UCR (was: New SNAP Standard (GCR instead of UCR))
- Subject: UCR (was: New SNAP Standard (GCR instead of UCR))
- From: Roger <email@hidden>
- Date: Sun, 30 Aug 2009 20:55:58 -0400
Hello Harold,
Your word of advice is well taken. What would you say the UCR was like on
old, electronic drum scanners, compared to current profile generation apps?
I have to confess that, for as long as I can remember, all (I'll have to
check ProfileWizardMio?) profile built with UCR by any of the current
profile generation apps have neutral inking curves that match your
description.
Best / Roger
> I'd just like to sound a cautionary note on using a profile built with
> UCR
> by any of the current profile generation apps. (I've discussed this
> topic
> at length in earlier missives). If you were to look at the neutral
> axis
> inkings of such a profile, you'd typically see a short black which
> rises
> precipitously in the 3/4 tones to shadows, often accompanied by
> reversals
> of the CMY inks to compensate for this rapid rise. Steep ink gradients
> and
> ink reversals in the shadows should be avoided; they adversely affect
> image
> quality in the shadows. Yet this is what UCR induces. Better to avoid
> UCR
> and customize your K-generation strategy with the available control
> parameters: black start, max black, TAC, GCR and Black Width. You're
> more
> likely to get a well-behaved profile.
>
> Harold
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