Tamron 17-50mm f/2.8 SP AF XR Di-II VC LD IF
This is a so-called “normal“ zoom, which means that it covers the zoom range you are most likely to use. If you are like most photographers, a “normal“ zoom is the lens you will be using most of time, so you need to weight your options carefully.
In 2009 Tamron introduced a version of its popular 17-50 f/2.8 with vibration compensation (VC). The VC works well.
The optics of this new lens, however, is less impressive than the non-VC version – i.e.: it has less sharp corners wide open. Stopped down, it is just as good as the non-VC version. Distortions and vignetting is about the same as the non-VC version, (and about average for a lens in this class). CA is minimal.
This lens is will have great appeal to Nikon shooters who want a stabilized nornal zoom. For Canonites, the Canon 17-55 f/2.8 is a more attractive choice.
Rating: Ed: -, User: - (normalized, 0=useless, 50=average, 100=excellent).
Mounts: Canon EF, Nikon F.
Aperture range: f/2.8 to f/32.
Optical zoom: 2.9x.
Close focus distance (CFD): 29 cm / 0.95 ft (from sensor plane).
CFD magnification: 1:4.8 / 0.21X.
Focus: AF (built-in, gear-type).
Filter diameter: 72 mm.
L x D, W: 95 x 80 mm, 570 g.
Approximate street price: USD 579 (new, w/o tax).
Tamron is a Japanese corporation specializing in the manufacture of photographic and industrial optics. The company was founded in 1950 as Taisei Kōgaku Kiki Seisakush. It was renamed Tamron in 1970.
As well as its own-branded designs, it makes many optical units for other companies compact digital cameras, and produces consumer grade lenses for several of the major DSLR manufacturers.