Tamron has announced full details of its new compact wide-angle wide-apertured zoom for the Sony range of full-frame mirrorless cameras. The Tamron 17-28mm f/2.8 Di III RXD is a lightweight lens option for those wanting a fast wide zoom – with the lens weighing just 420g, and measuring just 99mm long.
First announced at CES back in February, the lens is designed to be the perfect companion to the Tamron 28-75mm f/2.8 Di III RXD that went on sale last year. It features the RXD (Rapid eXtra-silent stepping Drive) AF motor unit that promises high-speed, super-quiet operation, making it suitable for shooting virtually noise-free video as well as stills. The two lenses also share the same 0.17m close focusing distance.
The 17-28mm f/2.8 has a remarkably small 67mm front filter ring for a full-frame wide-angle zoom (again this is the same as the companion 28-75mm).
The optical design consists of 13 lenses in 11 groups, including three aspherical lens elements, two LD (Low Dispersion) lens elements and one XLD (eXtra Low Dispersion) lens element. The lens is designed to be weather resistant.
The lens will go on sale at the end of July for £899.99 / $899.99.
Model number: A046
Focal length: 17‐28mm
Mount: Sony E-mount
Maximum aperture: f/2.8
Minimum aperture: f/22
Angle of view (diagonal): 103°41'-75°23'
Optical construction: 13 elements in 11 groups
Minimum focus distance: 0.19m (7.5 in) (at 17mm) / 0.26m (10.2 in) (at 28mm)
Maximum magnification ratio: 1:5.2 (at 17mm) / 1:6 (at 28mm)
Filter size: 67mm
Dimensions: 73 x 99mm
Weight: 420g (14.8 oz)
Aperture blades: 9 (circular diaphragm)
Lens hood included: Yes
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