Look at the numbers and edge markings on the film strip.  If the markings
are correct, i.e, not backwards, then the opposite side is the emulsion
side.  Look at the film at an oblique angle to the light.  The dull side is
the emulsion side.  Look at the film under a loupe.  If there are things in
the frame that are backwards, such as a street sign, then you're looking
through the emulsion side.

Does this help ... ?

Shel 


> [Original Message]
> From: Jack Davis <

> I must have been shown, at least once, how to
> determine the emulsion side of film. I've not studied
> various film sides except to determine which is the
> 'front'.  (digital converts need not read further):-]
> Must be the side facing the lens.(?) The side that
> receives the light..right? When I have noticed, I
> believe it was the concave side.
> Image reversal properties of lenses can, of course,
> provide the answer if you're familiar with the scene.
> Well, whichever, wouldn't that be the side to place
> 'front' down on a scanner? The image would then be
> recorded after the light had passed through what must
> be a greater thickness of film. 
> I've had "pro" (expensive) labs (digital and optical)
> print frames in reverse a few times, so it must
> require more than a glance.
> I'd appreciate your advice.


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