On Wed, 10 Jan 2001 12:54:31 -0500 Austin Franklin ([EMAIL PROTECTED]) wrote:
> Devices are not really linear. There are a number of 'distortions'. One is
> offset, the second is linearity, and the third is gain.
CCD's are AIUI inherently very linear. 'Offset' = CCD noise in this context, gain
= 1.0 as fancy analogue amplification seems to be viewed as creating more problems
than it solves, and such things are better (and cheaper) done to the digitised
signal.
Regards
Tony Sleep
http://www.halftone.co.uk - Online portfolio & exhibit; + film scanner info &
comparisons
