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[filmscanners] RE: Repeated "Tonal correction", is it god?



Micheal,
In effect, we are in agreement.  For want of better terms, my choice of
"more expansive" and "compressed"n as descriptors of the tonal range may
have turned out to be a bad or misleading choice of words. I really did not
mean to refer to the dimension of the range as increasing or decreasing per
se but to the fact that the number of tonal distinctions with in the range
that are being defined are greater with a 16 bit high bit depth than is the
case with an 8 bit depth. So I think we are really in agreement here despite
my poor choice of wording.

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of michael shaffer
Sent: Friday, March 14, 2003 4:54 AM
To: laurie@advancenet.net
Subject: [filmscanners] RE: Repeated "Tonal correction", is it god?


LAURIE writes ...

> To put words in shAF's mouth (hope you don't mind shAF), the use of a
> greater bit depth - 16 bits/channel rather than 8 bits/per
> channel - allows
> one to capture a much more expansive tonal range rather than the more
> compressed range of an 8 bit per channel capture.  This means you
> will have
> more tonal detail and subtlties available within the range ...

  That didn't come out of my mouth ...<g>... and I do not agree.  More tonal
detail and subtlties, yes ... but if the scanner is capable of highbit
scanning, and you ask for delivery of 8bit instead of highbits, the same
tonal range is delivered.  Consider PS converting a highbit file to 8bits
... does the tonal range change because to converted?  It's the same thing.

cheerios ... shAf  :o)
Avalon Peninsula, Newfoundland
www.micro-investigations.com (in progress)


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