Re: Sprintscan 120 issues/findings (comments welcomed)

["Dave King" <kingphoto@xxxxxxxxxxxxxx>]

----- Original Message -----
From: "Kennedy McEwen" <rkm@kennedym.demon.co.uk>
To: <scan@leben.com>
Sent: Monday, April 15, 2002 3:38 AM
Subject: Re: Sprintscan 120 issues/findings (comments welcomed)


> In article <3CB9F8E2.23275.1E72AEA@localhost>, rafe.bustin@verizon.net
> writes
> >
> >This specific behavior has also been noted and griped
> >about on the LS-8000 -- ie., histograms that fall off
> >abruptly, on the low end, at a value well above zero.
> >
> >On my Nikon, using NikonScan, this cutoff appears
> >at a count of around 20-30 (out of 255.)  The "fix"
> >for this problem (in NikonScan) is screwy, and probably
> >not applicable or transferable to the SS 120, is my guess.
> >
> >Frankly, this (mis)behavior doesn't concern me nearly as
> >much as the opposite problem (clipping.)
> >
> But this would appear to be clipping just the same Rafe - the analogue
> signal is being clipped before the optical or digital range limits have
> been reached.  I would be less concerned if the fall off wasn't abrupt.
> --
> Kennedy

I wouldn't be concerned if all the detail in the film is in the scan with
linear transitions.  To this point I haven't seen clipping problems with the
8000 with chromes or negs, but have yet to check the histograms.  Nikonscan
maps the black end point a little high (and higher still for negs than
chromes, which is as it should be) presumably for pre-press use where one
doesn't want absolute zeros, but also gives you eye droppers with settable
points in the curves dialogue.  I don't see a problem here.

I learned last night that color negs never band(?), so there's no need to
use super fine scan mode with color negs?  And the minimum for best quality
with chromes is 2x multisample, ICE, and 14 bit output.  I've never seen
chrome scans this good coming off a CCD scanner.

Dave


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