Digital Camera World

Tokina Opera 16‑28mm f/2.8 FF

Add drama to wide-angle shooting

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Will we sing the praises of this wide-angle?

Tokina has focused most of its attention on wide-angle lenses over the years, earning a good reputation in this sector of the market. Surprising­ly, the first lens in the new series of Opera lenses was a 50mm f/1.4 prime, but the second is a direct replacemen­t for Tokina’s popular ATX 16-28mm f/2.8 Pro wide-angle zoom for full-frame Canon and Nikon SLRs.

The new 16-28mm is aimed at enthusiast photograph­ers, with Tokina’s typically sturdy build quality and a fast and constant f/2.8 aperture rating. The metal mounting plate is weather-sealed and the bulbous front element is protected by a fixed petal hood.

The optical layout is based on 15 elements in 13 groups: there are three glass-moulded aspherical elements, including one large-diameter precision-moulded element, second from the front. Towards the rear, three low-dispersion elements are featured, with the aim of reducing lateral and spherical chromatic aberration­s.

As with the older AT-X Pro lens, the opera’s autofocus system is based on a ‘silent’ DC motor coupled with a GMR (Giant MagnetoRes­istance) magnetic sensor. Tokina says the GMR sensor has been updated for increased speed and accuracy. We didn’t notice any real boost in speed and autofocus remains slower than in competing ultra-wide zooms that feature ring-type ultrasonic or stepping motor systems. However, autofocus proved more consistent­ly accurate in our tests.

Performanc­e

At the short end of the zoom range, centre sharpness and contrast are fabulous, even wide-open at f/2.8. At mid to long zoom settings, centre sharpness is similarly excellent if you stop down to f/4. Corner sharpness is less impressive. Vignetting is fairly low for such a wide-angle, wide-aperture lens. Matthew Richards

 ??  ?? 1 The fixed petal-shaped hood precludes the use of filters without a specialist adaptor. 2 The overall physical length of the lens is fixed throughout the zoom range. 3 There’s a focus distance scale positioned beneath a viewing panel. 4 Tokina’s usual push-pull focus ring enables switching between autofocus and manual focus.
1 The fixed petal-shaped hood precludes the use of filters without a specialist adaptor. 2 The overall physical length of the lens is fixed throughout the zoom range. 3 There’s a focus distance scale positioned beneath a viewing panel. 4 Tokina’s usual push-pull focus ring enables switching between autofocus and manual focus.
 ??  ?? Full-frame compatible Yes Elements/groups 15/13 Image stabiliser No Minimum focus distance 0.28m Max magnificat­ion factor 0.19x Manual focus override Push-pull Focus limit switches No Internal zoom No Internal focus Yes Filter size N/A Iris blades 9 Weather seals Yes Supplied accessorie­s Built-in hood Dimensions 89 x 134mm Weight 940g
Full-frame compatible Yes Elements/groups 15/13 Image stabiliser No Minimum focus distance 0.28m Max magnificat­ion factor 0.19x Manual focus override Push-pull Focus limit switches No Internal zoom No Internal focus Yes Filter size N/A Iris blades 9 Weather seals Yes Supplied accessorie­s Built-in hood Dimensions 89 x 134mm Weight 940g

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