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Canon 20-35mm f3.5-4.5 USM

Test Results - standard DSLR

Full Aperture Sharpness in the center of the frame at at all focal lengths is good to very good, but corners are slightly soft, pretty much as you would expect. Although best in the center at 35mm, and worst in the corner at the same focal length, the overall character of the results is fairly even. Slightly soft overall especially at the edges, with slight distortion in the corner at 20mm. With a super wide zoom like the Canon 20-35 3.5-4.5 slight is a good word to hear.

All crops below are sections of the test images at full size - 100%

CENTER                                                                          CORNER

Canon 20_35__MG_5339 20 3_5 Canon 20_35__MG_5340 20 3_5 corner

center                             20mm f 3.5                        corner

Canon 20_35__MG_5341 28 4 ctr
Canon 20_35__MG_5342 28 4 corner

center                            28mm f 4                          corner

Canon 20_35__MG_5343 35 4_5 centre
Canon 20_35__MG_5344 35 4_5 corner

center                             35mm f 4.5                        corner

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