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- To much money
|Ease of use|
|Value for money|
Published on: 11 November 2016
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Buy Now - Pay Nothing for 6 Months, means Buy now and pay in full before 25/11/2019 (approx.) plus a £29.00 settlement fee and you will be charged absolutely no interest. Should the balance not be paid in full by 25/11/2019 (approx.) you will automatically enter into a loan agreement with 42 equal payments with a representative APR of 19.9%. If you settle earlier than 42 months you will only pay the interest accrued over the number of months you have been paying the loan.
Price of Goods: £689.00
Pay 0% Deposit
Loan Amount £689.00
Total Payable on 25/11/2019 - £689.00 + £29.00 settlement fee
Cost of loan if paid by 25/11/2019 = £718.00
Finance is subject to status. Terms and conditions apply.
The EF17-40mm f/4L USM is a lightweight ultra wide angle Canon EF zoom lens. It is especially well suited for use with digital EOS SLR cameras with a focal length conversion factor higher than 1.
Ultra wide lens for analogue EOS SLR cameras
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.
Standard zoom lens for digital EOS SLR cameras
While it is an excellent lens when used with an analogue 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.
Superior optical performance
The EF17-40mm f/4L USM has 12 lens elements arranged in 9 groups. Super Spectra Coating on the elements ensures excellent colour balance and minimises 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.
Extensive set of high-end features
Minimum focusing distance is just 28cm 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 polarising 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.
|Angle of view (horzntl, vertl, diagnl)||93° - 49°20', 70°30' - 34°, 104° - 57°30'|
|Lens construction (elements/groups)||12/9|
|No. of diaphragm blades||7|
|Closest focusing distance (m)||0.28|
|Maximum magnification (x)||0.24 (at 35mm)|
|Filter diameter (mm)||77|
|Max. diameter x length (mm)||83.5 x 96.8|
|Magnification - Extension Tube EF12 II||0.83 - 0.32|
|Magnification - Extension Tube EF25 II||1.02 - 0.70¹|
|Extenders EF1.4x II and EF2x II||Not compatible|
¹ Mechanical full-time manual focusing built-in
Magnification - Extension Tube EF25 II
¹ Only compatible at tele