Olympus-OM
[Top] [All Lists]

Re: [OM] Mirror and Aperture Prefire

Subject: Re: [OM] Mirror and Aperture Prefire
From: "Thomas Haegin" <haegint@xxxxxxxx>
Date: Sat, 10 Jul 1999 13:59:56 +0200
Looked up at Gary Reese test page: What does that mean, how do you do a
mirror and aperture prefire???

<< Zuiko lenses in this weight and length class need additional support, as
well as mirror and aperture prefiring, to attain their best results. >>



Copied from Gary Reese tests:

<<
200mm f/4 Zuiko (multi-coated)
Vignetting = A
Distortion = None

OM-4 with mirror and auto diaphram prefire, lens supported by a Bogen
Telephoto Lens Support
Aperture  Center    Corner
f/4       B         B-
f/5.6     A-        B+
f/8       A-        B+
f/11      A         A-
f/16      A         A-
f/22      B+        B+
f/32      B         B-

Notes: Apparently superior results versus using an OM-1 (see below). Zuiko
lenses in this weight and length class need additional support, as well as
mirror and aperture prefiring, to attain their best results.
>>


< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >


<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz