I have the same founding as Phillip, I have been using film scanner since
1993 (Nikon LS-10) which use manual focus control and now the LS-2000 (AF
control), the DOF seems good enough for most slide or negative. Once you got
a point in focus, the whole frame will be sharp enough even at the max
resolution.
C.H.Ling
-----Original Message-----
From: Phillip Franklin <pfranklin@xxxxxxxx>
To: olympus@xxxxxxxxxxxxxxx <olympus@xxxxxxxxxxxxxxx>
Date: Wednesday, June 02, 1999 6:46 PM
Subject: [OM] OM] Scanning: film curvature problems
>Omer,
>
>I've been scanning film for quite a few years and never heard this one.
>Unless the film or slide mount is in real bad shape, the film holder or
>slide mount do an adequate job of keeping the film flat enough for
>scanning. Most ccd's have a reasonable depth of field and this tiny
>measurement would not effect the final scan. Some scanners like my new
>Minolta 35 Quick Scan Plus have a manual focus knob to better focus when
>using different thickness mounts. However it's not that drastic in most
>cases. I've seen some pretty sloppy methods of putting film on to the
>glass of a PMT(drum) scanner (at 4000 dpi) and I don't think it has ever
>made a difference other that the image needs some rotation correction.
>Main thing is keep the film clean! Using the supplied holder will
>noramally flatten out most 35mm film.
>
>Phillip Franklin
>
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