Testseek.com have collected 23 expert reviews of the Canon EF 17-40mm f/4.0L USM and the average rating is 81%. Scroll down and see all reviews for Canon EF 17-40mm f/4.0L USM.
(81%)
23 Reviews
Average score from experts who have reviewed this product.
Users
(91%)
227 Reviews
Average score from owners of the product.
81010023
The editors liked
Ultra-wide field of view. Reasonable price tag. Good center sharpness.
Canon L build and optical quality
Fast and quiet USM focusing motor
Constant f4 aperture throughout range
Will also work on full-frame body
Extreme wide angle coverage
Well-corrected at wider focal lengths
An exotic but affordable L lens
The editors didn't like
Muddy edges and corners at 17mm. Some distortion. Noticeable color fringing
