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Canon

Canon EF 17-40 mm f/4.0 L USM Lens

Mfr#:

8806A007AA

Quicklinx: 8XB4WS00
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10 in stock
£675.00
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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.

Specifications

Summary

Product Description
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 group(s) / 12 element(s)
Special Functions
Wide angle, zoom
Filter Size
77 mm
Length
9.7 cm
Weight
500 g


Detail

General

Length
9.7 cm
Diameter
8.4 cm
Weight
500 g

Lens System

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

Miscellaneous

Included Accessories
Dust cap, lens cap

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Type: Lens
Brand: Canon
Stock Status: In Stock
Price Range Inc VAT: 500 - 750

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