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EF 17-40mm f/4L USM

Ultra-Wide Zoom

Item Code: 8806A002AA

Experience how changing your lens can unlock a world of possibilities, and see beyond what meets the eye. Start Exploring!

Buy the Power to Create Advanced 2 Lens Kit and get both the EF 17-40mm f/4L USM and EF 50mm f/1.4 USM lenses in one bundle.

Learn more about the Canon milestone that has helped you capture many of yours with Canon EF lenses.

Purchase and register select products and receive 13 months FREE accidental damage protection. OFFER ENDS JUNE 29, 2019.

Features

  • EF Mount L-Series Lens

  • F/4

  • Super UD

  • Ring Ultrasonic Autofocus Motor

  • Manual Focus Override

  • Water and Dust Resistant

  • Internal Zooming and Focusing

  • 77mm Front Filter Thread Diameter


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Specifications

Focal Length & Maximum Aperture

17 - 40mm; 1:4

Lens Construction

12 elements in 9 groups

Diagonal Angle of View

104° - 57° 30'

Focus Adjustment

Inner focusing system with USM

Closest Focusing Distance

0.28m / 0.9 ft.

Zoom System

Rotating type

Filter Size

77mm

Max. Diameter x Length, Weight

3.3 x 3.8, 1.1 lb. / 83.5 x 96.8mm, 500g

Compatible Supplies & Accessories

Canon offers a wide range of compatible supplies and accessories that can enhance your user experience with you EF 17-40mm f/4L USM that you can purchase direct. Scroll down to easily select items to add to your shopping cart for a faster, easier checkout. Visit the Canon Online Store

 

 

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Brochures

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Resources

MTF Charts

A Modulation Transfer Function (MTF) chart measures a lens’ expected optical performance at the center of the picture area and measures repeatedly along the diagonal line, further and further toward the corners of the image. The higher a curve is shown on the chart, the better the lens is performing in the area the chart is measuring. As a curve moves from left to right, it displays the lens' results from center towards the corners.

For more information on understanding how to read Canon Lens MTF charts, please click here.



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† Prices and specifications subject to change without notice. Actual prices are determined by individual dealers and may vary.

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