Tamron has announced its latest lens for Sony APS-C cameras: the ultra-wide 11-20mm f/2.8 Di III-A2 RXD — the first APS-C lens of its type to offer such a fast maximum aperture.
The lens offers a full frame equivalent of 16.5-30mm and will make the perfect complement to the 17-70mm f/2.8 for Sony APS-C cameras announced in December last year. In keeping with Tamron’s design traditions, the ultra-wide lens is compact, measuring just 3.4 in (86.2 mm) in length and with a diameter of 2.87 in (73 mm). It weighs 11.8 oz (335 g) and features 12 elements in ten groups, 7 apertures blades, and a 67mm front filter thread — notably the same thread as the 17-70mm f/2.8.
The minimum focusing distance is tiny: just 5.9 in (15 cm) at its widest — a magnification ratio of 1:4 — and 9.4 in (24 cm) when zoomed in. As with many recent Tamron lenses, the 11-20mm features moisture resistance.
Those looking to vlog might be disappointed to know that it doesn’t feature the VC (vibration control) mechanism to stabilize filming. However, the RXD (Rapid eXtra-silent stepping Drive) motors mean that autofocus noise shouldn’t be a problem.
The global pandemic permitting, the lens is due to become available on June 24 and will cost $829.