A four-blade diaphragm in an enlarger lens probably doesn't
matter. Since it's focusing a two-dimensional negative on a two-
dimensional piece of photographic paper, there (hopefully) is not
any out-of-focus stuff to create bokeh, good, bad, or otherwise.
Shame about the Jena Tessar. Send it to me and I'll epoxy it on
one of my old Spotmatic bodies, both of which still work.
Walt
---------- Original Message ----------------------------------
From: Moose <olymoose@xxxxxxxxxxxxx>
Reply-To: olympus@xxxxxxxxxxxxxxx
Date: Thu, 10 Apr 2003 15:40:14 -0700
>Well, I have both extremes. My Opemus enlarger came with a lens
>with a square aperture! I have a Carl Zeiss Jena 50/2.8 Tessar
>with a 14 blade aperture. I'd test the bokeh, but I don't really
>want to spend a lot of time messing around with a very old
>Practiflex. According to the Camera mounts & registers table, it
>has a 40X1 thread, not an M42, and the register distance is
>slightly shorter than an OM, so I doubt there is any way to try
>it on an Oly either.
>
>Moose
>
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