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Canon 17-40mm F4.0 L USM - EF

Canon 17-40mm F4.0 L USM - EF

Brand:Canon
Product Code:8806A007AA
Availability:10 - 14 Days
Price: £649.00 Ex Tax: £540.83
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A high-quality, wide-angle zoom for a variety of subjects.

The EF 17-40mm f/4L USM is an ultra wide-angle zoom lens that offers excellent image quality and a constant maximum aperture. Its compact, lightweight body makes it an ideal travelling companion.

  • Superb optical performance throughout the zoom range
  • Fast autofocus speed
  • Highly resistant to dust and moisture
  • 28cm minimum focusing distance at all focal lengths

Ultra-wide or standard zoom

The EF 17-40mm f/4L USM acts as an ultra-wide angle zoom on film or full-frame digital EOS cameras. On DSLRs equipped with APS-C sized sensors it acts as a standard zoom, giving an angle of view equivalent to a 28-70mm lens on a full-frame camera.

Close focusing

Minimum focusing distance is just 28cm throughout the entire zoom range.

Superior optical performance

The EF17-40mm f/4L USM has 12 lens elements arranged in nine groups. Super Spectra coating ensures excellent colour balance and minimises ghosting and flare. To provide superb image quality over the complete 17-40mm zoom range the lens uses three aspheric elements. Super UD (Ultra-low Dispersion) glass prevents chromatic aberrations.

Ultrasonic focusing

A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting. Furthermore, full-time manual override is available, making it possible to adjust focus without leaving AF mode.

Non-rotating front element

The front of the lens does not rotate, which makes using specialised filters, such as polarisers and graduates, easier. A drop-in gelatine-filter holder can be found at the back of the lens.

Smooth background blur

A virtually circular aperture diaphragm gives out of focus regions a softer, more uniform feel. Sharp foreground objects stand out against a smooth blurred background.

Weather resistant

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
Lens Type Canon EF, Zoom, Wide angle
Focal Length 17-40mm
Minimum Focusing 28cm
Minimum Aperture f22
Maximum Aperture f4
Magnification 1:4.2
Filter Thread 77mm
Dimensions 83.5 x 96.8mm
Weight 500g

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Technical specifications for guidance only and cannot be guaranteed accurate. Errors and omissions excepted. Mifsuds.com is a trading name of Mifsuds Photographic Ltd, a company registered in England and Wales, UK Company No. 06858138.

The registered office address is 2 Bridge Farm Offices, Harberton, Totnes, Devon TQ9 7PP, United Kingdom. VAT Reg: 585 5268 01