Digital BW, The Print

I have seen the same thing on a 7000.

Bill

on 10/28/04 9:14 PM, Benjamin C. Pierce wrote:

> Small question for QTR curve design experts...
> 
> I'm starting to get some very good results now out of QTR (on a 1280
> with UT2 inks), but am a bit stuck on one issue: the density difference
> between 100% black and 99% black is much too large, so that, if an image
> contains a large area of 100% and an adjacent area of 99%, the edge
> between them is clearly visible and the 99% region looks dark gray
> rather than nearly black.
> 
> The problem occurs both with the provided 1280 UT2 curve (the carbon
> curve for HPR paper, FWIW) and with a modified version of the same curve
> that I linearized myself using the eye-one procedure described in the
> documentation.  In a different experiment, I was able to get the black
> values closer together by cranking up the GRAY_SHADOW parameter, but
> just doing this, of course, makes the whole print very dark.
> 
> What's the right approach to this issue?
> 
> Many thanks,
> 
>     - Benjamin Pierce
>       http://www.cis.upenn.edu/~bcpierce/photos
> 
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