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[OM] Re: 200mm primes

Subject: [OM] Re: 200mm primes
From: Joseph <joseph@xxxxxxxxxxx>
Date: Sat, 11 Dec 1999 04:54:30 -0800 (PST)
>Are we reading the same data? The 200/5 mounted on the OM-2000 with
>aperture and mirror pre-fire and proper support is an A-/B+ lens!

Umm, Gary's data shows the single-coated 200/5 only achieving that
rating at f/16.  At wider apertures it is significantly worse.  And Gary's 
data also says that the single-coated one had "moderately low contrast".
A lens with moderately low contrast and mediocre image quality until
it is at least 2 stops closed down from (a slow, f/5) wide-open aperture 
is what I would call a fairly mediocre lens (based on Gary's data).

seeing the sharpest aperture of a lens for 35mm at f/16 is usually a
clue that it isn't a well corrected lens since it is depending on

As I mentioned, I owned the multicoated one and it was contrasty enough
but soft until well stopped down.

>>Runners up were the 200/4 Zuiko

>Which is also an A-/B+ lens.  

the 200/4 is better than both the single and multicoated 200/5's
at wider apertures, according to Gary's data, and is a contrasty lens.
most lenses are sharp enough at f/16.  top notch color and contrast, and being
well corrected at wider apertures is what makes a lens pro quality.

which data were you looking at?

Joseph


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