[APML] Mamiya 645 80mm Coma

[Todd Leen <tleen@cse.ogi.edu>]

Folks,

I recently picked up a Mamiya 645 w/ 80mm f/2.8
which I've been using piggyback on my Tak Sky-90
(shooting 35mm at f/4.5).  Using E-200 in both, I stop the 645 down
to f/4.0 and run the same exposure time on both.
I was disappointed to find significant coma at the corners and
edges of the 645 images.  Is this normal for this lens?
Does the f/1.9 80mm have similar aberrations at f/4.0?

Thanks in advance.

Todd


_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo