Tamron SP 24-70 mm f/2.8 Di VC USD
- very good image quality in the frame centre for most combinations of apertures and focal lengths,
- image quality on the edge of the frame is similar or better than that of the direct rivals,
- sensibly corrected chromatic aberration,
- negligible vignetting on APS-CC/DX sensor,
- well corrected astigmatism,
- practically imperceptible coma on smaller APS-C/DX sensor,
- silent, accurate and fast autofocus,
- efficient image stabilization,
- as many as five years of warranty.
- weak performance by maximum relative aperture and middle of the focal range,
- huge moustache distortion at the widest angle of view,
- significant spherical aberration near the maximum focal length,
- vignetting on full frame is noticeably higher than that of the rivals,
- work against bright light could have been better.
The Tamron SP 24–70 mm f/2.8 Di VC USD, although less expensive than its brand name competitors produced by Canon, Nikon or Sony, is not cheap at all because you must pay for it over 4,000 PLN. It is by 1,000 PLN more expensive than the Sigma 24-70 mm f/2.8 EX DG HSM. Taking into account the fact that you must pay for it such a significant amount of money the list of its flaws is quite long. The Tamron’s strong points are its efficient stabilization system, a long warranty period and a relatively good resolution on the edge of the frame. Still the Tamron loses in many categories (like resolution in the frame centre, distortion, vignetting, spherical aberration) and, what is even more problematic, it is defeated not by those more expensive devices but by the cheaper and smaller Sigma. If the Tamron company want to interest the prospective customer in their product they have to think about more attractive price. Lowering it would mean the Nikkor and the new Canon would be as much as two times more expensive than the tested lens – a fundamental difference, you must admit.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -