On Tue, 10 Apr 2001 09:04:19 -0400 Dave King (kingphoto@mindspring.com)
wrote:
> The other I'll call
> "shark's tooth", and it looks like tiny spikes at regular intervals on
> high contrast edges.
It's a regular, stepped displacement (on the y axis of a landscape scan)
of pixels which repeats every 4-5 pixels. It is most visible on high
contrast edges, but occurs throughout the image. You can see it in the
full res LS30 scan at my site eg the boundary of her chin against the
black background. ICE was not used for this scan. As you say, this is not
related to the normal 'jaggie' phenomenon which arises through aliasing.
Most, if not all, LS30's seem to do it occasionally or always, with
Nikonscan. As the scanner ages it tends to worsen. I don't know if v3
helps, VS certainly does.
-
Regards
Tony Sleep
- Online portfolio & exhibit; + film scanner
info & comparisons
