Tamron 18-250mm f/3.5-6.3 Di-II LD IF macro AF
Older versions of this lens for Nikon have no built-in focus motor. However, on January 2008 Tamron changed the design of the Nikon version to have a built-in motor.
Rating: Ed: -, User: - (normalized, 0=useless, 50=average, 100=excellent).
Mounts: Canon EF, Nikon F, Pentax K, Sony A.
Aperture range: f/3.5-6.3 to f/22.
Optical zoom: 13.9x.
Close focus distance (CFD): 45 cm / 1.48 ft (from sensor plane).
CFD magnification: 1:3.5 / 0.29X.
Focus: AF (type depends on version).
Filter diameter: 62 mm.
L x D, W: 84 x 74 mm, 452 g.
Approximate street price: USD 330 (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.