I am having some difficulty choosing a wide angle zoom.
I am looking at the Canon 17-40 L and the Sigma 12-25 DG zooms. I have tried both and I like both but cant afford both.
So its down to one. I have a 5DMk2 and also have a 24-105 L.
With the 17-40 I am concerned I am only getting the 17-24 focal length benefit as I have the 17-24 range covered in the 24-105.
Whereas the Sigma will provide a completely new range of 12-24.
Can anyone provide me with any opinions on either lens ?