I think you must have meant "aren't held flat against the glass". I
think the answer is that they can't be and also be held in a frame. The
frame has to have some thickness and in the case of the V700 it's 2.5mm
from bottom of frame to film surface. But another more interesting
question is why adjustment of +/- 1/2mm is significant. It's my
understanding that flat beds typically have good depth of field over
about 1/2" above the surface of the glass. I don't know why the V700 is
any different.
Chuck Norcutt
Ken Norton wrote:
>> Stick a small 2-3mm thick support near the center of the frame. Scan
>> once, move the support and scan again. Then combine the images in PS. :-)
>
>
> I am at a loss as to why the negs are held flat against the glass?
>
> AG
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