Canon EF 17-40mm f4 L USM lens
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Product Description

Canon EF 17-40mm f4 L USM Lens 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... read more

Canon EF 17-40mm f4 L USM Lens

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.

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MPN: 8806A007

Barcode: 4960999189949

Specification

  • Superb optical performance throughout the zoom range
  • Fast autofocus speed
  • Highly resistant to dust and moisture
  • 28cm minimum focusing distance at all focal lengths
  • Closest focusing distance: 0.28m
  • Not compatible with Canon Extenders
  • Includes soft lens case LP1319
  • Includes lens hood EW-83E
  • Filter size: 77mm
  • Dimensions: 8.35D x 9.68L cm
  • Weight: 500g

MPN: 8806A007

Barcode: 4960999189949

Finance

Spread the cost with finance on selected products. Make that dream purchase a reality and buy the latest and greatest from Castle Cameras today. There are various options available, including (subject to promotion) interest free credit. We are currently only offering finance through our Mail Order / On-line services. If you need any further information please call our team on 01202 526606 or e-mail enquiries@castlecameras.co.uk

Canon EF 17-40mm f4 L USM lens

£779.00

No stock on site. Please allow 10 days for delivery

Product Code: AA14443

 
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Product Summary

Upgrading? Check our offer for your old gear

Two Year Canon UK warranty

77mm filter size, includes lens hood EW-83E, Lens Case LP1319, weight 500g

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