Frantisek wrote:
Hi,
recently, I got access inhouse to a Nikon V ED, the 4000
dpi 35mm scanner. Although I prefer optical prints, I have to
submit mostly digital files by now. Which is not a problem as I
shoot digitally, but now I need to scan some of my older film.
Before, I would have just had it printed A4 and submitted to the
editor, and not care afterwards. Now, for various reasons, I have
to scan it myself.
Apart from usual quirks with the software (why it doesn't come with
SilverFast!), I am having some problems with scanner noise, or
grain aliasing. More than I excepted, but on that later.
What more, I got these weird black speckles in the luminance
channel, leaving me dumbfounded. Please see
http://3web.dkm.cz/members/fotof/temp/lumaspeckles.tif for 100%
4000dpi sample (L channel only). USM does accentuate them a lot.
Anybody knows what it might be? I always scan with any sharpening
turned off. ICE on, and both GEM and ROC disabled (I found the GEM
feature to hoover extremely).
Most of the speckles can be removed by Dust&Scratches filter, but
at the expense of some specular detail, and it's just annoying to
have to run another slow filter on the 16bit file...
thanks for any suggestions.
Good light!
fra
Grain aliasing is a problem. I much more than I had expected with my
Minolta Scan Dual IV also. Especially with b/w film, it was horribly
grainy compared with the optical prints. OTOH the very grainy Tmax3200
was as grainy as the optical print, so the size of the grain matters in
this case.
Your sample image does not work, so i cant comment on what it might be.
Check the negs carefully though for stains or such.
/Henri
