Digital BW, The Print

>Just as an fyi, contrast IS gamma.  You mean dynamic range which, yes, is
>determined by dMin and dMax and not gamma/contrast.

Thanks but I'm not sure what your point is. I know what gamma is. I was
saying that since the gamma adjustment in QTR doesn't affect the overall
contrast of the print (i.e. the dynamic range) and instead affects only the
contrast within the midtone areas, it was unlikely that changes in it would
cure the flat print problem the OP was having (i.e. it wouldn't change the
overall contrast or dynamic range of the print).  Are you saying that was
inaccurate (or just that instead of using the term "overall contrast" I
should have used the term "dynamic range")?

Or were you perhaps saying that since "gamma" by definition is a measurement
made only on the straight line portion of a curve (ignoring the toe and
portions beyond the shoulder) my statement about it affecting only the
midtones was redundant? I do know how gamma is measured and I'd agree my
statement may have been redundant. However my basic point was just that
QTR's gamma adjustment was unlikely to cure the OP's problem of having an
excessively flat print with washed out shadows and highlights, I wasn't
trying to explain what gamma was or how it was measured or why other
measurements (e.g. average gradient or contrast index) are perhaps
preferable when describing a print's overall contrast or dynamic range.
----- Original Message ----- 
From: "Steve Kale" <stevekale@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Friday, March 25, 2005 8:21 AM
Subject: Re: [Digital BW] Quadtone RIP Faded print