Canon EF wide-angle zoom lens17 mm - 40 mm

£658.99  ex VAT
£790.79  inc VAT

Stock

Ordered upon Request
Lens System: Wide-angle zoom lens
Intended For: 35mm SLR, digital SLR
Mounting Type: Canon EF
Lens Aperture: F/4.0

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  • Insight #: 0000630764
  • Mfr. #:

    8806A007

  • UNSPSC: 45121600

Overview

Product Description

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. While it is an excellent lens when used with an analog 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. The EF17-40mm f/4L USM has 12 lens elements arranged in 9 groups. Super Spectra Coating on the elements ensures excellent color balance and minimizes 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. 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 polarizing 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.

Specification

Canon EF wide-angle zoom lens - 17 mm - 40 mm
Lens System Wide-angle zoom lens
Intended For 35mm SLR, digital SLR
Mounting Type Canon EF
Lens Aperture F/4.0
Focal Length 17 mm - 40 mm
Optical Zoom 2.4 x
Min Focus Distance 28 cm
Focus Adjustment Automatic, manual
Lens Construction 9 groups / 12 elements
Special Functions Wide angle, zoom
Filter Size 77 mm
Length 9.7 cm
Weight 500 g


Extended Specification

General
Diameter 8.4 cm
Length 9.7 cm
Weight 500 g
Lens System
Diaphragm Blades 7
Features UD glass, internal focusing system, Ultrasonic Motor (USM), full-time manual focusing, rear filter slot, rear focusing system, aspherical lens, internal zoom
Filter Size 77 mm
Focal Length 17 mm - 40 mm
Focus Adjustment Automatic, manual
Intended For 35mm SLR, digital SLR
Lens Aperture F/4.0
Lens Coating Super Spectra coating
Lens Construction 9 groups / 12 elements
Magnification 0.24
Max View Angle 104 degree(s)
Min Focus Distance 28 cm
Min View Angle 57.5 degree(s)
Mounting Type Canon EF
Optical Zoom 2.4 x
Special Functions Wide angle, zoom
Type Wide-angle zoom lens
Miscellaneous
Included Accessories Dust cap, lens cap

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