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.

  • 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.

  • 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.

  • 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.

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EF 17-40mm f/4L USM 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