[MF3D.FORUM:580] Re: MF Viewer interoculars

[Greg Erker <erker@xxxxxxxxxxxxxx>]

>Can someone comfirm whether the following is proper
>analysis?  Suppose we have a person who can tolerate
>*zero* divergence while looking at slides in a viewer.
>The person uses a viewer with lens separation of 63.5mm.
>He wants to mount a stereo pair in mounts with 62mm
>aperture spacing, with nothing coming through the window.
>What is the allowable MAOFD in such a case?  I'm thinking
>the shot could not exceed 1.5mm OFD.  If the slides are
>mounted to, say, 65mm infinity separation, the observer has
>to diverge...but our supposition was that our test subject
>cannot do so.  If the image is mounted to 63.5mm infinity,
>part of the scene will come through the window (the near
>point separation would be about 61mm, less than the mount
>separation of 62mm).
>
>I've never been good with the math and geometry (well, not
>since getting out of high school).  Does the above make
>sense?

  Seems right to me.

Greg E.