How does the sigma 18-50mm EX, Tamron ETC compare to the Canon 17-40mmL

[DinoS]

Hi

So how does the sigma 18-50mm EX and tamron 17-50mm F2.8 compare to the Canon 17-40mmL?

In context of IQ, barrel distortion etc.

thanks

Mark

 

[WanderingMind]

From what I read when deciding which lens to go for, they were both as good as the L image quality wise. The main factors for me in the end were build quality and I want to upgrade to a 5D so the 17-40 will become a fantastic ultra wide

 

[8utters]

Yah I have the 17-40 L too, fantastic lens, worth buying for it's very high build quality alone