Canon EF 17-40mm F4 L Lens
Canon EF 17-40mm F4 L Lens (8806A007)

Canon EF 17-40mm F4 L Lens (8806A007)

£779.99

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The Canon EF 17-40mm F4 L Lens is an affordable L-series ultra wideangle zoom lens that’s ideal for both film and digital SLRs. Superior optics are assured by the use of three aspherical lens elements, in addition to a Super UD (Ultra-low Dispersion) glass element. Optical coatings are optimized for use with digital cameras.

The Canon EF 17-40mm F4 L Lens focuses as close as 28cm, and offers both Canon’s full-time manual focus and a powerful ring-type USM for fast and silent AF. It has a constant f/4 maximum aperture, and offers the choice of screw-in 77mm filters or a holder in the rear of the lens for up to three gel filters. Finally, it offers weather-resistant construction similar to other high-end L-series lenses.

Features of the Canon EF 17-40mm F4 L Lens

  • 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 Canon EF 17-40mm F4 L Lens 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 Canon EF 17-40mm F4 L Lens 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.

What’s in the box

  • Canon EF 17-40mm F4 L Lens
  • Lens Hood EW-83E
  • Lens Cap E-77U
  • Lens Dust Cap E
  • Lens Case LP1319
  • User Manual

Canon EF 17-40mm F4 L Lens Sample Images

Specifications of the Canon EF 17-40mm F4 L Lens

Lens type Zoom lens
Focal length 17–40 mm
Image stab. No
Lens mount Canon EF
Max aperture F4
Min aperture F22
Min focus 0.28 m (11.02)
Max magnification 0.24×
Weight 500 g (1.10 lb)
Length 97 mm (3.81)

For a more detailed specification see here. For more Canon Cameras see here.

Additional information

Weight 475 g
Dimensions 83.5 × 96.8 mm
Brand

Filter Thread Size (mm)

77

Lens Mount

Lens Type

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If your product develops a fault within 30 days of purchase, please return with proof of purchase and we’ll exchange or refund it.

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