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Distortion at 17mm

Please see the 17mm comparison page for details.

Mouse over the image below to compare. Both zooms show faint pincushion distortion (bowing inwards), typical for a zoom lens at its long end. But it is so low it can be ignore.

The 17/4L shows the lowest distortion and the most natural looking image.

The 17-40/4L has strong barrel distortion at 17mm, with the 16-35/2.8L II showing somewhat less of it, but both zooms look positively stretched compared to the 17/4L.

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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.

DAP includes thousands of pages of exclusive coverage and high resolution Retina-grade examples detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare, behavioral and practical usage.

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AB comparison image
Variants 16_35, 17_40, 17f4L available in full article
17-40/4L <===> 16-35/2.8L II

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