Film-Tech Forum ARCHIVE: lens calculator

This is topic lens calculator in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by Mike Moreno (Member # 4887) on 02-14-2012, 07:25 PM:

hi.
how can i calculate the lens size for a 35 mm projector?
i know the screen size, the trow distance.

thsnks

Posted by Paul Mayer (Member # 355) on 02-14-2012, 08:20 PM:

Take a look in the Warehouse of this site; under "Software" there are a couple of lens calculators for 35mm film.