i had bought a tamron 17-50 from bns. Quite happy with it. But what is the with or without motor you all talking bout? How do i check my set is with or with motor? Any major diffs?
Don't worry, they're talking about the Nikon mount of the lens. All Canon-compatible EF/EF-S lenses have motor, and the Tammy has a motor for the 450D. No major differences.