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Re: [OM] fast macros

Subject: Re: [OM] fast macros
From: "John A. Prosper" <prosper@xxxxxxxxxxxxxxxxx>
Date: Fri, 12 Mar 1999 16:12:04 -0500 (EST)
On Fri, 12 Mar 1999, Gary Schloss wrote:

|C.H.Ling wrote:
|
|>Concerning fast Zuiko Macro 90/2 and 50/2 I found that at long distance (a
|>34 floors building at around 50m from my house, it is my always testing
|>target), 100/2 has higher resolution than 90/2 at both F2 and F4 and my
|>newly acquired 55/1.2 has higher resolution than the 50/2 when both at F4.
|>
|>The above two Zuikos Macro I once own (yes both sold) were in mint
|>condition so I think the result was not affected by dog lenses.
|
|C.H., just to remind you that a true macro lens performance is optimized
|to be best at _close_ distances, whereas the 100/2 and 55/1.2 are likely
|optimized for best performance at infinity.
|
|IMHO, with the 50/2 and 90/2 macros Olympus did an admirable job of
|balancing these contradictory requirements, but I bet that your above
|results are "by design" rather than an accident.

In particular the 50/3.5, 50/2, 90/2, and 135/4.5 macros are optimized
for 1:10 lifesize reproduction.  Their flexibility as general purpose
lenses are huge pluses. 



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