The new Tamron 17-28mm f/2.8 Di III RXD for Sony full-frame (E-mount) cameras covering ultra-wide to wide focal lengths for landscape, astrophotography, and architectural photographs, will be available latter this month at an RRP of $1699.
The relatively wide and constant f2.8 maximum aperture delivers good control of depth of field and low-light performance. The acronym-rich, 13 elements in 11-group optical design incorporates both XLD and LD elements, which, according to Tamron, produces a highly corrected image with reduced chromatic aberrations and colour fringing, for improved clarity and colour accuracy. Individual elements also feature Tamron’s BBAR coating, which suppresses flare and ghosting for greater contrast when working in backlit and harsh lighting conditions.
An RXD stepping motor enables quick, near-silent autofocus performance. along with full-time manual focus override. Minimum focussing distance is 19cm at the wide setting. The lens also features a moisture-resistant construction along with a fluorine-coated front element to protect against fingerprints and smudging.
The lens is designed for the full-frame Sony range but can also be used with APS-C Sony models, with a 25.5-42mm equivalent focal length range. (The Sony E-mount is, unlike its competitors’ ranges, used in both full-frame and APS-C format Sony cameras.) It weighs 420g and takes 676mm diameter filters. It comes supplied with a lenshood.
The overall length (99mm) does not change when zoomed or during focus. Tamron is encouraging users to combine the new lens with its 28-75mm f2.8, with which it shares design characteristics such as a zoom ring at the front and a focus ring at the rear: ‘Zooming, focusing and other functions are identical in this series to ensure consistent operation.’
Australian RRP is $1699 and it will be hitting the shelves on July 25.