Canon EF 17-40mm f/4L USM Lens

Canon EF 17-40mm f/4L USM Lens play

  • Canon EF 17-40mm f/4L USM Lens

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Canon EF 17-40mm f/4L USM Lens
64825
£619.00

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PRODUCT OVERVIEW

The EF 17-40mm f/4L USM is a lightweight ultra wide angle Canon EF zoom lens. It is especially well suited for use with digital EOS SLR cameras with a focal length conversion factor higher than 1.

Details

Features
* Superb optical performance throughout the zoom range.
* Fastest AF speed within its class (same as the EF16-35 f/2.8L USM)*
* Highly dust and moisture resistant
* 28cm minimum focusing distance at all focal lengths *as of January 2003

Ultra wide lens for analogue EOS SLR cameras The EF17-40mm f/4L USM is an ultra wide angle Canon EF zoom lens meant for professional and high amateur SLR EOS camera users.

Standard zoom lens for digital EOS SLR cameras
While it is an excellent lens when used with an analogue SLR camera, the EF17-40mm f/4L USM is especially well suited for digital SLR cameras with an imaging sensor size smaller than the 35mm format. Indeed on such digital SLR cameras these focal lengths can give an angle of view approximately equivalent to that of a 28-70mm lens used on a 35mm camera, which makes it the ideal standard zoom lens.

Superior optical performance
The EF17-40mm f/4L USM has 12 lens elements arranged in 9 groups. Super Spectra Coating on the elements ensures excellent colour balance and minimises ghosting and flare. To provide superb image quality over a 17-40mm zoom range the lens uses three aspheric elements of two different types, while Super UD (Ultra-low Dispersion) glass is used to prevent the chromatic aberrations that often can degrade the subject edge clarity.

Extensive set of high-end features
Minimum focusing distance is just 28mm throughout the entire zoom range.

The Auto-focus works silently and quickly thanks to a fast central processing unit with an improved AF algorithm. You can override AF mode with manual focus should you wish.

Controlled by an electromagnetic diaphragm, the EF17-40mm f/4L USM's circular aperture can achieve a more attractive appearance to out of focus background areas in a picture.

The front of the lens does not rotate as you focus. This means, for example, that polarising filters still function effectively as you zoom in and out. At the rear of the lens there's a drop-in gelatin filter holder.

Highly resistant to moisture and dust, the EF17-40mm f/4L USM is ideally suited for use in harsh environments. Environment friendly lead-free glass is used throughout its construction.

Specifications

Specification Overview

Model EF 17-40mm f/4L USM
MPN
(Manufacurer
product
no)
8806A003AA
Manufacturer Canon
Condition New
EAN 4960999189949
Lens
Mount
Canon EF
Lens
Type
Wide-Angle Zoom
Maximum
Aperture
f/4.0

Full Specifications

Angle of view (horzntl, vertl, diagnl) 93° - 49°20', 70°30' - 34°, 104° - 57°30'
Lens construction (elements/groups) 12/9
No. of diaphragm blades 7
Minimum aperture 22
Closest focusing distance (m) 0.28
Maximum magnification (x) 0.24 (at 35mm)
AF actuator USM¹
Filter diameter (mm) 77
Max. diameter x length (mm) 83.5 x 96.8
Weight (g) 500
Magnification - Extension Tube EF12 II 0.83 - 0.32
Magnification - Extension Tube EF25 II 1.02 - 0.70¹
Lens hood EW-83E
Hard case -
Soft case LP1319
Extenders EF1.4x II and EF2x II Not compatible
Promotions
  • Free 3 Year Lens Warranty

    Simply purchase a selected L series lens between 1st August 2017 and 31st January 2018 and you can claim a 3 year warranty from Canon UK.

    For more information and to claim your warranty click HERE

    Offer Expires: 31-01-2018

  • Canon Lens Reward Offer

    Have you recently bought or are looking to buy a Canon EOS camera* as well as this lens? You might be eligible to claim Lens Reward Cashback. Buy selected Canon EOS DSLR or EOS M cameras and any new Canon lens withint a 90 day period and claim cashback on the lens! Find out more.

    *Selected EOS camera models only. Terms & Conditions apply. Full information on the Blog.

    Offer Expires: 31-12-2018

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