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sealed construction,; excellent image quality in the frame centre,; good image quality on the edge of the APS-C/DX sensor,; lack of any serious problems with longitudinal chromatic aberration,; slight lateral chromatic aberration,; not especially bothersome spherical aberration,; low vignetting on...

significant vignetting on full frame,; noticeable distortion on the wider end of the focal range,; slow; audible autofocus.

The Tamron 17-35mm f2.8-4 is a very compelling small and light wide-angle zoom lens. It is very sharp in the center throughout the zoom-range. The APS-C/DX-corner is sharpest at 21mm and softens a bit towards the long-end, while the FF/FX-corner is sharpest at the long end and softens up a bit below...

Small and light; f2.8 focal ratio at the short end; Very high center sharpness; Very little longitudinal color aberrations; Extensive weather sealing plus fluorine coating against moist and dust; Reliable AF operation; Very good resistance against flare, glare, and ghosting.

Field curvature at the short end; Focus ring turns while focusing.

Focal length range is an important lens selection criterion and the Tamron 17-35mm f/2.8-4 Di OSD Lens' focal length range is a very important one to most kits. With an aperture opening that is reasonably wide, especially at the wide end, this lens stands ready for a wide range of lighting...

This lens was a nice surprise. I bought mine used like new (it is not produced anymore). I wanted a cheap option for UWA and I found this bargain. I was unsure about it because of some reports of its under performance in FF (I use a Canon 6D) but I cannot complain (too much) about it.

Cheap; lightweight; sharp enough (center); f/2.8.

Soft corners and vignetting wide open; some CA.

Note: the product image above shows the Canon variant of the lens The build quality of the lens is pretty decent but the finish doesn't quite feel as nice as Tokina AT-X or Sigma EX. As you can see in the product shot above the lens extends a little towards the long end of the zoom range.

If you want a lens that will serve both as an ultra wide zoom on full frame as well as a wide to standard zoom on a cropped sensor, then this lens is unlikely to disappoint. Used on a tripod for landscape or Architectural work, where stopping down reduces the variation in quality across the frame,...

Good control of distortion, Exceptionally sharp in the centre; Overall good performance, Well designed lens cap.

Above average fall-off at wide edges; Hood not totally effective

The vision behind the Model A037 is that of an ultra-wide-angle zoom lens that has a separate concept from SP 15-30mm F/2.8 Di VC USD (Model A012), with superb image quality in a small body for high portability .

The Tamron 17-35mm f/2.8-4 Di OSD is a light, ultra-wide zoom for full-frame camera systems. It doesn't deliver absolutely perfect optics, but is quite compact and affordable.

Small and light; Full-frame coverage; Sharp optics; Good flare resistance; Available for Canon and Nikon systems; Weather protection and fluorine coating; Works with mirrorless via adapter.

No optical stabilization; Strong vignette; Visible distortion; Disappointing manual focus experience.