Tamron 70-300mm f/4-5.6 AF Di LD Macro
Very soft when used wide open. Closed down, it delivers OK results from 70 mm up to around 200 mm. At the tele end, it remains soft at all apertures. CA is also noticable at the tele end, and may account for some of the softness. Distortions are low at 70 mm, but negligible amounts of pincushion distortion through most of the range.
Flipping a macro switch in the focal length range of 180 mm to 300 mm takes CFD to 95 cm and the maximum magnification ratio to 1:2. Unfortunately this is the range where the lens is at its softest, making the macro setting less useful.
Older versions for Nikon is without focus motor. Nikon versions produced after January 2008 (part number A17NII) has a built-in focus motor.
Rating: Ed: -, User: - (normalized, 0=useless, 50=average, 100=excellent).
Mounts: Canon EF, Nikon F, Pentax K, Sony A.
Aperture range: f/4-5.6 to f/32.
Optical zoom: 4.3x.
Close focus distance (CFD): 95 cm / 3.12 ft (from sensor plane).
CFD magnification: 1:2 / 0.5X.
Focus: AF (built-in, gear-type).
Filter diameter: 62 mm.
L x D, W: 117 x 76 mm, 458 g.
IR: Poor IR performance.
Approximate street price: USD 165 (new, w/o tax).
Introduced: no data.
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.