Canon's full-frame, wideangle-to-fisheye zoom lens attempts to offer more than just a one-trick effect. Mat Gallagher finds out whether this lens really should have a place in your kit bag

Product Overview

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

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


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Distortion control

Many image-editing programs provide correction for lens distortion and these can often extend to extreme wideangles such as the 8-15mm optic. Panoramic software also tends to feature the ability to turn 360° circular images into regular framed scenes by a process known as unwrapping. However, as fisheye images are only 180° views, the process for converting them is not the same.

As the 8-15mm lens is still quite new it is not yet profiled in most software, so adjustments must be made manually. The controls will allow the removal of barrel distortion in the image, as well as control of colour fringing, although to return the circular shape to a standard rectangular frame it will be necessary to crop into the image.

DxO Optics Pro ( is one of the most advanced lens-correction tools and, although it doesn’t currently have a dedicated profile for the 8-15mm lens within its controls, it has a fisheye option alongside barrel and pincushion correction to cope with the more extreme distortions at stake.

Images: Hayden, taken with the Sigma 8-16mm at 8mm on an APS-C sensor (cropped in). Hayden, taken at 8mm on a full-frame sensor for a full, circular fisheye effect

Image: Hayden, taken at 15mm on a full-frame sensor


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  1. 1. Introduction
  2. 2. Features and build
  3. 3. Handling
  4. 4. Image quality
  5. 5. Distortion control
  6. 6. Resolution
  7. 7. Our verdict
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  • Duncan Dunnit

    I find with this lens, were I to set the lens at infinity it is not always in focus. I would be grateful were you to advise me as to what would you focus on when you are setting your 8-15mm lense to infinity. When I align it directly as it shows on the lens it is not always 100% sharp, we are only talking about 1mm to the left or to the right of it to correct things. But I now connect my nexus 7 to the camera and would like to perfect my infinity thus would be grateful to know as to what should one focus on to achieve this. Thanks for any input.