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Lens review

Canon EF 11-24 mm f/4L USM

8 October 2015
Szymon Starczewski

11. Summary

Pros:
  • brilliant image quality in the frame centre,
  • very good image quality on the edge of the APS-C sensor,
  • sensible image quality on the edge of full frame,
  • lack of longitudinal chromatic aberration,
  • imperceptible spherical aberration,
  • lack of astigmatism-related problems,
  • slight coma,
  • moderate vignetting on the APS-C sensor,
  • silent, quick and accurate autofocus.

Cons:

  • high level of lateral chromatic aberration at the 11 mm focal length,
  • huge distortion at 11 mm,
  • high vignetting on full frame,
  • disastrous work against bright light,
  • no possibility to use classic filters.

Can you actually praise an expensive lens with a significant number of serious flaws in the summary of your test? This time the answer seems to be ‘yes’. Firstly, Canon squared up against a problem which so far hasn’t been touched by any other producer. As a result you get a unique device characterized by excellent resolution in the frame centre and sensible resolution on the edge of the frame even if you deal with full frame. With such huge angles of view it is an achievement worth your recognition and respect.

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Well, there are also flaws…Maybe in such construction some of them are simply unavoidable or very difficult to avoid. It is yet to be seen whether or not it is actually possible to produce a better lens with similar properties. So far the Canon 11-24 mm remains a unique option and only because of that its constructors should be praised for their audacity.