I admit that I have not tested them at 1:2, I only test them at 1m and a
distant target. Anyway I think you and Larry's sample must be a special one
:-) Photodo also report the Tokina is the best 90 but I really doubt, on the
other hand I agree the Tokina also gives excellent result if you look at it
alone.
Following are two test slides if you anyone interested, you may see some
different in OOF effect too:
Film: Velvia,
Camera: OM4
Tripod: Gitzo 1228 with Velbon 263 ball head
Scanner: Nikon LS4000 at 3000dip
Each file around 1.6MB, you should download them and view with your photo
editing software.
http://www.accura.com.hk/Z90-1.jpg
http://www.accura.com.hk/T90-1.jpg
http://www.accura.com.hk/Z90-3.jpg
http://www.accura.com.hk/Z90-3.jpg
C.H.Ling
----- Original Message -----
From: "Albert" <olympus@xxxxxxxxxxx>
> 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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