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     áòèé÷ :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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[filmscanners] Scanner Exposure Settings


  • To: lexa@www.lexa.ru
  • Subject: [filmscanners] Scanner Exposure Settings
  • From: "Bill Seramin" <seramin@pacbell.net>
  • Date: Sun, 13 Apr 2003 16:56:02 -0700
  • Importance: Normal
  • In-reply-to: <200304132317.h3DNHGco004043@mtaw1.prodigy.net>
  • Unsubscribe: mailto:listserver@halftone.co.uk

Hello,

I have been lurking on this list for approx three years and finally made
the plunge and bought a Polaroid Sprintscan 4000 (not plus) about a year
and a half ago.  I bought the SS4000 when Polaroid was cleaning out
stock and offering a rebate - this was during the "David Hemmingway
Era".

Many thanks for all the questions that have been already answered!!

I have had one question that has never really been explained enough for
me to understand:

What happens internal to the scanner when adjustments are made on the
scan software?  In my mind I can only equate how a camera exposes film;
adjust exposure time and aperture.  Now I am confident in assuming that
the scanner does not have a variable mechanical aperture, an equivalent
for shutter adjustment, and from what I can tell the lamp brightness
does not vary during scanning.  So what happens when endpoints and
curves are adjusted in the scan software?  Maybe I have dense film or a
dense brain, but I am having trouble visualizing what is going on.

My only hope is that this has nothing to do with density / dynamic
range!!!

Regards,

Bill Seramin
seramin@pacbell.net



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