Saturday, 28 January 2012

Tokina to release new AT-X 116 Pro DX II

Kenko Tokina Japan has announced an update to the popular 11-16mm f/2.8 AT-X Pro. The new model adopts a high speed and silent DC motor (SDM) as well as a GMR sensor (to improve AF accuracy from wear over time), first seen on the full-frame AT-X Pro 16-28mm f/2.8. The company says the optical construction has been improved with the inclusion of an asphere in the front group (in addition to the second at the rear) and the inclusion of two low dispersion glass elements (denoted as SD/ FK03 in the image below). Interestingly, the new lens also adopts a new multi-coating process that delivers smoother gradation of the shadows, the company adds. The lens retains the 77mm filter diameter of the original.

With no direct equivalent from Canon or Nikon, it's the equivalent to a 17-24mm f/2.8 on a APS-C camera, the Tokina 11-16mm f/2.8 is very popular with press photographers and HD filmmakers. The new model will be available in Nikon first (as it has the longer focal flange distance) in March 2012, followed by a Canon mount version in late July. Both are priced initially at 90,000 Yen ($1,173), excluding Tax. A Sony mount version hasn't been mentioned but it's perhaps unlikely, given the tie-up with Tamron.
The current version is available for $659 after a $40 mail-in-rebate from Adorama, please follow the link here.
The above MTF chart shows some curvature of field and the resolution and contrast falls off at the edge, presumably this is at maximum aperture.
Better edge performance at 16mm is hardly surprising. Resolution appears high, centrally at least, though it's difficult to tell at what spatial frequencies the lens has been tested (unless you can read Japanese, that is). I'm assuming 10 and 30 lp/mm, respectively.

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