LensTip.com

Lens review

Canon EF 8-15 mm f/4 L Fisheye USM

11 August 2011
Szymon Starczewski

6. Distortion

When it comes to a fisheye lens, any distortion measurement is art for art’s sake. The projection function in such types of lenses is distortion-prone by definition. It’s worth mentioning here that with such wide angles of view the curvatures of straight lines make the image more like the one visible to the naked eye; it is definitely more natural than exaggerations and deformations in the corners or rectilinear wide angle lenses.

Just for fun we are giving you the distortion values which were provided by the Imatest program. In the case of the APS-C sensor the values for the beginning, the middle and the end of the focal lengths’ range were respectively: −35%, −20% and −15%. On full frame we got the following values: −45%, −35% and −27%.

Canon 50D, 8 mm
Canon EF 8-15 mm f/4 L Fisheye USM - Distortion
Canon 50D, 12 mm
Canon EF 8-15 mm f/4 L Fisheye USM - Distortion
Canon 50D, 15 mm
Canon EF 8-15 mm f/4 L Fisheye USM - Distortion


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Canon 1Ds MkIII, 8 mm
Canon EF 8-15 mm f/4 L Fisheye USM - Distortion
Canon 1Ds MkIII, 12 mm
Canon EF 8-15 mm f/4 L Fisheye USM - Distortion
Canon 1Ds MkIII, 15 mm
Canon EF 8-15 mm f/4 L Fisheye USM - Distortion