Canon EF 16-35 mm f/2.8L III USM
11. Summary
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Pros:
- solid casing,
- excellent image quality in the frame centre,
- very good image quality on the edge of the APS-C sensor,
- good image quality on the edge of full frame,
- imperceptible longitudinal chromatic aberration,
- lack of serious problems with lateral chromatic aberration,
- moderate spherical aberration,
- better distortion correction than in the case of the rivals,
- quite nice appearance of out-of-focus areas for those parameters,
- fast, silent and accurate autofocus.
Cons:
- a bit too high coma for the longer end of focal range,
- monstrous vignetting on full frame.
After testing this lens you would want to shout ‘finally!’. It took three versions of the 16-35 mm f/2.8 lens in order to get the proof Canon is able to design such an instrument. After two previous, not completely satisfying versions you get a lens which generates very sharp images in the frame centre but also provides very high image quality on the edge of the APS-C sensor and on the edge of full frame. None of the rival products managed to perform so well. Paradoxically a very well-done f/4 brother of the lens tested here might become also its biggest rival – it is not only optically excellent but also it comes with an optical stabilization unit and its price is over two times lower. The owners of Canon reflex cameras are in a very comfortable situation because they are spoilt for choice.
