17–35mm · f/2.8–4
The Tamron SP AF 17-35mm F/2.8-4 Di LD Aspherical (IF) offers sensational center resolution and low distortion above 17mm, but edge sharpness is weak at 17-24mm. Chromatic aberration is medium to high, and vignetting is low on APS-C. Build quality is decent with smooth rings, though the focus ring rotates in AF mode. It suits APS-C users seeking an affordable, compact wide zoom; full-frame users may find corner softness problematic.