Re: Composing for window effects

[P3D Peter F Davis <pd@xxxxxxxxxxxxx>]

I've been wondering how consistently the sprocket holes line up with
the exposed image area on a piece of film from a given camera.  For
example, on the Realist, I would think the sprocket holes are in the
same position relative to the exposed part of the film on all shots.
(For example, one sprocket hole is edge aligned with the exposure, or
halfway across, or something like that.)

If there is reasonably consistency, it should be possible to figure
out where the sprocket holes should be for the left and right film
chips relative to the opening in the mount.  And if that's true, it
should be possible to make a real idiot's mounting guide by xeroxing
the inside of a well mounted slide pair to see where the sprocket
holes align.  You could then use this to align all future slides.

Am I missing something?  Does "proper" alignment vary according to the
composition of the slide?  Or are the film transports in the cameras
not that consistent?

Thanks,

-pd

--------
                                Peter Davis
                        http://world.std.com/~pd

            "If you can't behave yourself, who can you behave?"


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