Citation Envoyé par Platypuss Voir le message
Enfin un test Canon <-> Tamron qui prend clairement position.
Test objectifs Macro, 3ème partie*: le Tamron SP AF 90mm f/2,8 DI - **** / Shop Photo
Test assez entrange qui vas a l'encontre de tout ce qu'on peut lire sur cet objectif, peut être un mauvais exemplaire, jete un oeil sur slgear ou photozone :

Photozone :
The Tamron AF 90mm f/2.8 Di SP is a superb lens without any significant flaw. In fact optically it is every bit as good, maybe even slightly better than the Canon EF 100mm f/2.8 USM macro.

slrgear :
As of this writing in mid-November, 2006, other lenses we've tested in this range include the Canon 100mm f/2.8, the Nikon 105mm f/2.8, in both its original and recent VR-equipped versions, and the Sigma 105mm f/2.8. In terms of sharpness, the Tamron 90mm does very well, and may in fact be the sharpest of the group, from about f/4 through f/11.