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Re: [OM] WA corner distortion?

Subject: Re: [OM] WA corner distortion?
From: Gary Reese <pcacala@xxxxxxxxxxxxx>
Date: Thu, 12 Oct 2000 10:37:14 -0700
Lex asks:

<< How are the Zuiko superwides at correcting for [coma]? >>

Popular Photography only tested a 24mm f/2. The apertures at which it
disappeared (critical f-stops) were as follows:
1/3rd out: f/2.8
2/3rds out: f/3.5
Far edge: f/5.6

Three other lenses also suffer from coma: 35mm f/2.8, 40mm f/2 and
35-70mm f/3.6  Speaking of the latter, they found that lens to actually
be a f/3.44~f/3.75 There was also a 20% reduction in measured flare when
using the supplied lens hood. Interesting to look back over these tests.

Unfortunately, Popular Photography only tested a few Zuikos over the
years, as listed at:
http://brashear.phys.appstate.edu/lhawkins/photo/pop-photo-zuiko-tests.txt

Gary Reese

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