Tokina Opera 16-28mm F2.8 FF Lens - AF

Tokina opera represents a series of next generation, premium full-frame lenses for high-end DSLR camera s. The new series perfectly matches recent high-resolution full-frame DSLR camera s that demand the highest quality optical designs. Built on the award winning heritage of Tokina's AT-X line, the new opera series will offer an ever-expanding, premium line of full-frame lenses that meet the growing demands of high-performance DSLR camera s.

Overview
Opera 16-28mm F2.8 FF is a super wide zoom lens featuring super wide angle at 16mm and traditional wide angle at 28mm that stands at the border where the standard zoom angle range begins, thus providing the photographer practically full wide angle coverage with only one lens, available in Nikon F and Canon EF mounts.
Super wide angle, superior resolving ability coupled with high contrast and beautiful bokeh rendering, fast f/2.8 constant aperture throughout the zoom range and accurate AF drive system make this lens attractive for photographers who specialize in landscape, interior architecture, street snap, documentary, environmental style portrait and night sky/time lapse photography genres.

Optical performance
The new Tokina opera 16-28mm F2.8 FF incorporates a complex optical design with 15 elements in 13 groups, 3 of which are of aspherical type including large aspherical P-MO element and 3 are glass molded Low-Dispersion (SD) elements for effective suppression of chromatic and spherical aberrations.

This optical design performs just optimal resolution at the aperture wide open that greatly increases by stepping down to f/4 and narrower. To make the lens suitable for landscape shooting and BW photography, engineers made maximum efforts to realise high level of contrast and rich color gradation in the image. 
The "bulb-like" shape front element can't fit a filter, but greatly contributes to low distortion and low light falloff. Superior color rendering will allow the photographer to capture the natural scenery in rich blue colors without using C-PL filters, and the in-built hood petals protect the front element.

Due to well handled spherical aberration, Tokina opera 16-28mm F2.8 FF creates gentle bokeh rendering at 28mm tele side, making this lens standing apart from other super wide angle lenses.

Ergonomics and exterior design
The new Tokina opera 16-28mm F2.8 FF has been designed to provide the photographer comfort and confidence while shooting. The lens comes in a sophisticated, gorgeous but yet simple and slim housing with well balanced zoom and focus ring arrangement. The Opera 16-28mm F2.8 FF is designed to fit top class DSLR camera s and is by no means meant to be light-weight and compact. It is the lens for those who are serious about photography.  
The directional rotation of the focus ring matches the direction of proprietary Nikon and Canon lenses.

Fast and accurate AF
The lens uses a Silent Drive module that allows the lens to focus quickly and quietly. This DC motor, coupled with a new GMR magnetic AF sensor, works together to increase AF speed and accuracy.

One-Touch Focus Clutch Mechanism
Tokina's exclusive One-Touch Focus Clutch Mechanism allows the photographer to switch between AF and MF simply by snapping the focus ring forward for AF and back toward the lens mount for manual focusing.