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

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.


> -----Original Message-----
> From: owner-filmscanners@halftone.co.uk
> [mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Lynn Allen
> Sent: 18 July 2001 15:52
> To: filmscanners@halftone.co.uk
> Subject: RE: filmscanners: Nikon MF LED light source...
> Julian wrote:
> >...the problem is that the only logical reference when Dmax is quoted on
> >its own is against full transparency, as you state - i.e. no
> film, nothing
> >in the way of the path betw the light source and the detector.
> IMHO (and I don't really want to get into this discussion *at all*), it
> would be more honest to use blank film for this test. The difference in
> light transmission might be miniscule, but sensitive CCDs might
> also be able
> to record it. Most media have a small amount of filtering properties.
> Best regards--LRA
> _________________________________________________________________
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