Thys wrote:
>
> Though not a great believer of lens tests myself, it is interesting to note
> a lens test of macro lenses in this month's (April) of Practical Photography
> (British mag) that tested the MTF's of allmost all brand names. The Sigma
> and Tamron (and Minolta 100mm) got the same final score as the Canon (9/10)
> which could be related to the respective price of the 3 but the Canon is
> mostly sharper than the the other two. The Tamron and Sigma seems to perform
> on par with the Canon in the centre MTF, but loses out at the edges.
> (Actually, at f2.8, the Sigma and Tamron both performs slightly better than
> the Canon in the centre but worse at the edges)
> The big disappointment from a Canon perspective from this article is how
> badly the 50mm/f2.5 fared in edge resolution wide open against the others.
> Other 'losers' include the Nikon 105, Pentax 100 and other 100's like
> Cosina, Vivitar, Soligor and Tokina.
Just for clarification: At what magnification did they test? I guess macro
range ?!
Thomas Bantel
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