good picture quality in the center of the frame for 14-17 mm focal length,
reasonably small coma,
fairly small vignetting
great at sharp light correction
good autofocus
Cons:
very poor picture quality for 10 mm
large chromatic aberration especially for the widest angle
visible astigmatism for 10 mm focal length
What could we write in the summery? If someone needs an ultra wide-angle zoom, fish-eye type and wants to use it on a small APS-C/DX detector, then there is no other choice than the Tokina. In this situation only a huge test failure would convince clients not to buy it. There was no failure and in many categories the lens achieved very good results. The one problem could be its behavior for 10 mm, where the only way to be content with the picture results is to use a diaphragm in a range of f/8 or f/11. When we try to open the diaphragm a bit more, the results may not be satisfactory. Although the test results for 10 mm might be lowered because of the test procedure problems for determining such a wide field of view, when we look at the picture taken by the Tokina with the widest angle possible and the maximum aperture we can see that the picture quality is not very high. So the weak test result for 10 mm is a fact but in light of other demonstrated problems, we can not say how significant.
Sample shots:
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