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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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