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Re: [OM] Re: 100 f/2 vs 90 f/2 Macro

Subject: Re: [OM] Re: 100 f/2 vs 90 f/2 Macro
From: ALEXSCIFI@xxxxxxx
Date: Fri, 28 May 1999 11:12:14 EDT
Hi Tim,

    I have the 100F2.0 but not the 90F2.0.  Your comments suggest the 90 
because the 90 will be much more corrected (sharper) in the close up range 
than the 100F2.0 beyond the 1:5 range of the 100F2.0 (.7 meters) because of 
the floating element correction (used by both). Putting the 100F2.0 on 
extension tubes disables it's ability to correct in that range. If your use 
of real close macro is infrequent, then using a double element close-up lens 
(both Canon and Leica made 55mm versions) is perhaps the better way to go 
with the 100F2.0. Moreover you still have the 50F3.5 to cover the 1:2 through 
1:5 range(I have the 3.5 also).

    However, for traveling with the simplest possible system perhaps the 90 
is the way to go.

    By the way, does anyone know the weight difference between the 2?

Alex

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