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Re: [OM] OM vs. Leica

Subject: Re: [OM] OM vs. Leica
From: Larry <halpert@xxxxxxxxxxxxx>
Date: Sat, 07 Dec 2002 17:19:51 -0500
I agree. I borrowed a zuiko 90mm (never would buy one at those prices), for the
same testing idea. I found my Tokina 90mm performed substantially better at
close, macro, and far distances.

Larry

Albert wrote:

> 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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