lens help .....

[wgp1987]

i currently have a sigma 28-70 f2.8-4 .... im not sure if i like it (at all) i had bought it off some guy for $100 a couple months ago and only use it when i need something wider. ive been looking at the canon 17-85is and the tamron 17-50 f2.8 and not sure what one i will end up with, i have played with both lenses and really like the canon. i figured that i only need the wide angle when in doors so the faster lens would be ideal? the canon lens is USM IS ..... but not sure what to invest in, any suggestions?

 

[JustAnEngineer]

The Tamron 17-50mm f/2.8 Di-II is a very good wide-standard zoom lens for about half the price of the excellent EF-S 17-55mm f/2.8 IS USM. It has a wider aperture and better image quality than the EF-S 17-85mm f/4-5.6 IS USM. If you really like Sigma, you might also consider the Sigma 18-50mm f/2.8 DC, but the Tamron seems to get better reviews:
Tamron AF 17-50mm f/2.8 SP XR Di II LD Aspherical [IF] (Canon) - Test Report / Review
Tamron 17-50mm f/2.8 XR Di II Lens Review