07-28-2010, 02:30 PM
From the verdict of the 17-40 test at 15MP.
"Looking a bit beyond the APS-C scope it is worth to mention that the lens didn't perform quite as well during our corresponding full format test so the straight-forward idea of buying it now for an APS-C DSLR and using it at a later stage on a full format DSLR may not be as desirable as it may appear. It also faces stiff competition from the Canon EF-S 17-55mm f/2.8 USM IS which is both faster and slightly superior."
What about the Tamron 17-50 (non-VC)? It's much cheaper and does a pretty good job. Together with the Tamron UWA you've got a pretty good and inexpensive package.
Of course if your job requires to have some prestigious equipment, the Tamron 17-50 is a lens almost every amateur has as well.
"Looking a bit beyond the APS-C scope it is worth to mention that the lens didn't perform quite as well during our corresponding full format test so the straight-forward idea of buying it now for an APS-C DSLR and using it at a later stage on a full format DSLR may not be as desirable as it may appear. It also faces stiff competition from the Canon EF-S 17-55mm f/2.8 USM IS which is both faster and slightly superior."
What about the Tamron 17-50 (non-VC)? It's much cheaper and does a pretty good job. Together with the Tamron UWA you've got a pretty good and inexpensive package.
Of course if your job requires to have some prestigious equipment, the Tamron 17-50 is a lens almost every amateur has as well.