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Re: [OM] OM vs. Leica

Subject: Re: [OM] OM vs. Leica
From: Albert <olympus@xxxxxxxxxxx>
Date: Sun, 08 Dec 2002 01:21:26 +0800
While that might be true for your set of lenses, I happen to believe that it depends sometimes on which "batch" you get. The Tokina 90mmf2.5 is a serious performer, I put it up against everything, and it more then held it's own.
I got this from the OM list archives...  Take it for what it's worth..

Albert.


At macro resolution (1:2)
Olympus    90mm f2                Tokina 90mm f2.5
   l/mm /(contrast% 30 l/mm)    l/mm(contrast)
f    center    corner        f    center    corner
2 40/(30) 36/(25) 2.8 45/(47) 36/(30) 2.5 64/(55) 57/(49)
4    45/(69)    36/(43)        4    72/(67)    64/(54)
5.6    45/(68)    40/(45)        5.6    81/(68)    72/(59)
8    51/(60)    40/(50)        8    81/(62)    72/(60)
11    45/(54)    40/(42)        11    64/(62)    57/(55)
16    40/(48)    36/(40)        16    51/(52)    40/(52)
22    40/(33)    36/(27)        22    45/(45)    32/(42)
32    -    -        32    36/(31)    29/(24)



I think you didn't have the 90/2, I have bought a mint (yes, true mint)
Tokina 90/2.5 some months ago just for testing. Side by side compare with
the 90/2 at F5.6, the Zuiko just perform better at both close and distance
objects.

C.H.Ling




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