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Re: Projector Adjustments
On Fri, 13 Sep 1996, P3D John Bercovitz wrote:
>
> > Even if all of the slides are well mounted, the mounts differ
> > incenter-to-center spacing. We have 5-perf, 7-perf, and RBT
> > 5-perf that have spacings like 7-perf.
>
> Actually, the infinity spacing is the same regardless of the
> aperture spacing of the mount. There is a very slight difference
> between the standard infinity spacing for 5-perf and 7-perf which
> is unfortunate but tolerable. So the variation in aperture spacing
> results in a variation in window depth.
>
> John B
>
>
>
Why is there a difference in infinity spacing for 5-perf and 7-perf mounts?
Dennis Sherwood
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