Re: So it's the bits? (Was: filmscanners: Sprintscan 120

[bjs]

----- Original Message -----
From: "Julian Robinson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, January 14, 2001 6:58 PM
Subject: Re: So it's the bits? (Was: filmscanners: Sprintscan 120


> And then I wonder why, when they already do
> multi-passes to reduce noise as in the LS2000, why they don't up the
> exposure for subsequent scans?  Maybe it is hard to keep things linear?
>

Not really following this thread so I may be missing your intent...but
whenever I've tried increasing exposure beyond "proper exposure", the CCD
saturates (ie blooms) on those pixels that were already bright.  This spills
over into the neighbouring dark pixels and ruins them.

So extra exposure has limited utility AFIAK.

Byron