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Max TFOV with BV?

Started by williamichang, 08/15/2003 08:34PM
Posted 08/15/2003 08:34PM Opening Post
Does a (1.25") binoviewer limit the maximum _true_ FOV, in addition to the EP fieldstop? For example, the 35mm Ultima cheats by not having a fieldstop, and is definitely wider than the 30mm. Do I get to keep that extra bit of FOV in a Denkmeier II (or another BV) or lose it anyway, to the 27mm clear aperture of the Denk? Thanks, -- William
Posted 08/16/2003 12:12AM #1
The "glass path" through a typical binocular viewer is between 5 and 5.5 inches. Imagine having a 5-inch barrel on your 30mm or 35mm Ultima... Sounds pretty "narrow," doesn't it?

However -- binocular viewers with 27mm entrance apertures *can* accomodate scopes as fast as ~f/6ish *without* restricting aperture and true field of view.

Best wishes.
-Dan