Ah, sorry, you thought bit deeper.
The film will not act as a typical lens-mounted filter (like
softeners) as it is too close to the object plane.
But lets consider this: if your film layer would be opaque you'd see a
difference between having it on the illumination side or on the lens
side. You'd still see the image if on the lens side but with
diminished contrast and thus loss of resolution. OTOH you might well
place an opaque screen at any place on the illumination side without
loosing information (just overall brightness).
Uwe
Quoting Miklós Müller <[email protected]>:
I don't quite get this. We are taking a picture of a fully backlit
transparent object. My understanding is that all the film layers act as a
filter for the light. So all layers will be equally involved regardless
which one is in the front.
Anyway I did some research:
https://www.google.com/search?q=dslr+film+scanning+emulsion+up+or+down
What I understood from people's comments is that for flatbed and
filmscanners it does indeed make a difference, i.e. avoiding newton rings,
and possibly other benefits, but it seems so to me that with dslr film
scanning most people agree that they see no noticeable benefit of having
the emulsion side down.
thanks:
m
On Thu, Aug 13, 2020 at 10:36 AM <[email protected]> wrote:
Hi,
you want to take an image of the emulsion layer (which contains the
photographic information). You do want to have as little as possible
in between that layer and your lens, not even the film carrier.
Mirroring can be done in software easily, lost information can't be
regained.
Uwe
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