On Jul 15, 2005, at 5:20 PM, Rob Studdert wrote:
The Pentax subtractive NR should only degrade the image where the
image has
hot/stuck pixels, it shouldn't alter the overall noise pattern as
it appears to
only affect pixels over a certain threshold. So if anyone is seeing
overall
image degradation with NR on then I assume that the camera is faulty.
The word "should" is aptly used. And the *ist DS NR is not supposed
to be active at any shutter speed over 1/25 second anyway.
However, several folks have reported that they see some degradation
with NR enabled at short shutter times, so I just leave it off unless
I need it for long exposures.
Godfrey
