EF 17-40mm f/4L USM

Your ultra-wide angle zoom for outstanding landscapes

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EF 17-40mm f/4L USM lens
Zoom in on the world's natural beauty
Side view of Canon EF 17-40mm f/4L USM lens
  • Choose from ultra-wide or standard zoom

    From ultra-wide angle zoom on full-frame cameras or a standard zoom on DSLR's with APS-C sensors, on which this lens delivers 28-70mm equivalent.

    Purple flowers lying on sand
  • Constant f/4 maximum aperture for complete control

    Maintaining a f/4 maximum aperture means there is no need to vary shutter speed or ISO as you zoom.

    Close up of hot pink flowers
  • Super Spectra lens coating for impeccable colour

    Super Spectra coating on the elements ensures colour balance and minimises ghosting and flare to ensure you'll be proud of your image quality.

    Canon Super Spectra lens coating on Canon EF 17-40mm f4 USM lens
  • Superior optical performance guaranteed

    L-series is Canon's flagship professional lens range and EF 17-40mm f/4L USM delivers with its precision-designed EF optics.

    Canon EF 17-40mm f4 USM lens
EF 17-40mm f/4L USM Gallery
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EF 17-40mm f/4L USM Specifications
Specifications
EF 17-40mm f/4L USM
  • Focal Length

    17-40mm

  • Max Aperture

    f/4

  • Minimum Aperture

    22

  • Minimum Focusing Distance (m)

    0.28

  • Maximum Magnification (X)

    0.24

  • Number of Lens Groups

    9

  • Number of Lens Elements

    12

  • Number of Aperture Blades

    7

  • Filter size

    77

  • Approx Weight (g)

    475

  • Compatible with extenders

    No

  • Lens Cap

    E-77U