Quote Originally Posted by clemmb


Both lenses wide open(tamron at f2.8 & 35mm, canon at f4 & 35mm), same ISO, etc...


The 24-105 is noticably sharper.


Wait, though- it isn't surprising that the Canon would be sharper wide open. Correct me if I'm wrong, Daniel, but when you said the 17-55 was sharper, did you not mean that it would be sharper at the same f number?