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Canon 17-40MM L – Series


  • EF Mount L-Series Lens
  • Aperture Range: f/4-22
  • Three Aspherical Elements, One Super UD
  • Ultrasonic Autofocus Motor
  • Manual Focus Override
  • Water and Dust Resistant
  • Internal Zooming and Focusing
  • Truly Circular Diaphragm
  • 77mm Front Filter Diameter
  • Rear Holder for Three Gel Filters


Product Overview

The EF 17-40mm f/4L USM Lens from Canon is a high quality “L” series. Wide-angle zoom lens for full-frame and APS-C size DSLR cameras. It combines one high-precision molded glass aspherical element and two replica aspherical lenses to achieve the extended zoom range, while also correcting for common aberrations that arise during zooming.

A Super UD (Ultra-low Dispersion) glass element minimizes the chromatic aberration of magnification which tends to occur with wide-angle lenses, to help eliminate color bleed along the edges of the subject and achieve high image contrast and resolution.

In The Box

  • E-77 II 77mm Lens Cap
  • Lens Dust Cap E (Rear)
  • EW-83E Lens Hood
  • Lens Case LP1319

Additional information

Camera Mount Type Canon EF
Imaging/ Image Sensor
Image Stabilization No
Focal Length 17 – 40mm
Comparable APS-C 1.6x Focal Length: 27 – 64 mm
Aperture Maximum: f/4
Minimum: f/22
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
Angle of View 104° – 57° 30′
Maximum Magnification 0.24x
Maximum Reproduction Ratio 1:4
Minimum Focus Distance 11.02″ (28 cm)
Diaphragm Blades 7
Filter Thread/Size Front: 77 mm
Tripod Collar No
Focus & Optics
Autofocus Yes
Elements / Groups 12 / 9
Dimensions Approx. 3.29 x 3.81″ (83.5 x 96.8 mm)
Weight 1.05 lb (475 g)

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