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RE: filmscanners: Nikon MF LED light source...





On Wed, 18 Jul 2001, Jawed Ashraf wrote:

> May I just jump in here briefly and make an observation about the way Nikon
> Scan 3.x works when scanning negatives?:
> 
> Negatives plainly have quite a high DMin.  The curious thing is that Nikon
> Scan doesn't tweak the black point at all when doing a default scan (ROC/GEM
> off) so that the black point ends-up at around 18-25, depending on film, it
> seems.  I'm guessing that NS is just giving you the DMin, un-adjusted.
> Seems like a faulty approach if you ask me.  Especially as NS insists on
> clipping the white point at the slightest excuse.


I have seen both of these effects on 
my 8000, with NS 3.1

The black-point effect is a minor 
annoyance, IMHO.  Maybe Nikon set 
things that way because of the 
common perception that Nikon 
scanners have "poor shadow detail."

In any case, it's easy enough to 
deal with, either in NS or later n 
Photoshop.

The white-point clipping is much 
more subtle.  But yeah, you wonder 
why the behavior isn't symmetrical 
at the two ends of the histogram.


rafe b.





 




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