Price Pledge ensures we won't be beaten on price! We actively monitor the prices offered by our competitors daily and adjust our own pricing accordingly.
Price Pledge ensures we won't be beaten on price! We actively monitor the prices offered by our competitors daily and adjust our own pricing accordingly. We pledge to match the price on most products offered by UK based dealers that are selling officially imported or manufactured UK stock, with full manufacturer warranty and is authorised to do so by the relevant manufacturer.
Prior to the point of sale CVP will endeavour to match the price on most products subject (but not limited) to the following criteria:
For further details please call us on 02083807400.
Details of where you have found the cheaper item.
The prices shown are an estimate based on the purchase of a single item with nothing else in your basket. The prices and options do not include shipping regulations and duties which will be checked in the checkout process.
At CVP we always strive to get your order to you as quickly as possible, but in the interest of clarity please note that next day is defined as the next working day (ie: excluding weekends, UK bank holidays and public holidays).
Orders placed and security cleared before 14:00GMT where all items are in stock will normally be dispatched on the same business day for ultimate delivery according to the shipping method selected.
Where an item is not physically in stock, the actual delivery time will be extended by the lead time for the product in question. Shipping to the Channel Islands, Northern Ireland, Republic of Ireland and some remote UK postcodes are not next day but 2 working days.
All transactions are subject to CVP security checks which are for our mutual protection against identity theft and fraud. In the event that additional checks are required you will be informed and dispatch time will be extended by the time taken to resolve any queries raised. We apologise for any inconvenience this may cause.
*Due to unforseen circumstances, on some occasions same day dispatch may not be possible. In this event we will always do our utmost to keep you fully informed of any delay imposed.
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.
|Angle of view (horzntl, vertl, diagnl)||93 degrees - 49 degrees 20', 70 degrees 30' - 34 degrees, 104 degrees - 57 degrees 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)|
|AF actuator||USM (1)|
|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 - 0.70 (1)|
|G.F.Holder III (hood III*)||NC|
|G.F.Holder IV (hood IV*)||(0)|
|AF actuator||(1) Mechanical full-time manual focusing built-in|
|Magnification - Extension Tube EF25 II||(1) Only compatible at tele|
|*Maximum number of Hood III/IV attachable. In case of zoom lenses, the maximum number applies to the short focal length|
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 USMs 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 theres 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.