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Distortion at 21mm

Please see the 21mm comparison page for details.

Mouse over the image below to compare the 17-40 to the 16-35, or click for larger view.

Both lenses show faint “wave” distortion: barrel distortion centrally, and pincushion distortion towards the edges and corners.

The 17-40 show notably stronger barrel distortion, the 16-35 is clearly preferable here at 21mm.

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Since 2006, Diglloyd Advanced Photography is the authoritative review and reference for DSLRs and their lenses: Canon and Nikon primarily, but also Pentax and some medium format. Reviews of key DSLRs are included, but the primary focus is on lens performance. Also included is a wealth of technique and workflow approaches.

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AB comparison image
Variants 17-40mm f/4 L,16-35mm f/2.8 L available in full article

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