P3D Re: Franka Beamsplitter: Beginner's question

[Mark Shields <beamsplitter@xxxxxxxx>]

That's an interesting observation that Sergio made about the
Franka beamsplitter (using a 40mm lens), but I'm sure it's true,
and a 35mm might just work, since the Franka's mirrors are
much larger than the Pentax, Stereo-tach, and Stitz (which
actually has _smaller_ mirrors).

Unfortunately my Olympus 40mm f/2 lens has the filter threads
on the aperture control ring, which means that the beamsplitter
rotates every time you change the f-stop!  %-0

Mark Shields

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