Brian asked about examining transparencies with a microscope.
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Hi Brian,
I was doing the same thing a few months back. I borrowed a microscope
from a friend at work. I asked around and got several offers. It seems
lots of folks have microscopes hidden in closets that haven't seen the
light of day for many years. Since I manage a bunch of engineers what
they have in their closets may be atypical but try asking around.
However, I was disappointed with the microscope method. The microscope
didn't really show me much more than I was already able to see with my
film scanner. I assume that's because the on-film resolution even using
slow (color) film and a good lens isn't all that much higher than the
2700 dpi of the scanner. I think that works out to about 50-55 lpmm.
I finally decided (after a posting by John Lind) to put the money toward
a better projector lens. I figured if I can't see it with the projector
it doesn't matter what the resolution is. John had recommended a
Schneider Vario Prolux and I managed to snag a NIB one from the bay for
about $70. With the Schneider lens I can see differences in test shots
made with various lenses but for the most part they are not terribly
significant. However, I have one inexpensive zoom which is clearly
inferior to the other lenses. Probably fine for snapshots but you
wouldn't want to use if for big enlargements.
Chuck Norcutt
Woburn, Massachusetts, USA
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