Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens with Case and Lens Hood - USA
Click to enlarge

More images

Click to enlarge

Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens with Case and Lens Hood - USA

Price: $749.00



About Canon 17-40mm

An affordable L-series ultra-wide-angle 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. This lens focuses as close as 11 inches (0.28m), 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 

Ultra-wide or standard zoom 
 The EF 17-40mm f/4L USM 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 EF17-40mm f/4L USM has 12 lens elements arranged in nine groups. Super Spectra coating ensures excellent color balance and minimizes 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 specialized filters, such as polarizers and graduates, easier. A drop-in gelatin-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

The Canon 17-40mm is commonly used for Art, Fun, General purpose, Landscape/scenery, Landscape photography, Low light, Night photography, Photojournalism, Portraits, Special effects, Sports/action, Travel, Upgrade, Video, Weddings, Wildlife, Wildlife photos and more.The Canon 17-40mm is most used by customers who consider themselves to be a Casual photographer, Enthusiast, Photo enthusiast, Professional, Pro photographer, Semi-professional, Semi-pro photographer among others.The Canon 17-40mm is popular because customers like the following qualities of the Canon 17-40mm: Clear glass, Consistent output, Durable, Easily interchangeable, Easily mounted, Easy to clean, Fast / accurate auto-focus, Fast auto-focus, Lightweight, Nice bokeh, Rugged, Sharp, Simple controls, Strong construction, Superior build quality and Super-sharp images

Canon 17-40mm Features

  • Optimized for Digital Imaging
  • High Speed Rear Focusing
  • Close Focusing to 11 inches
  • Non Rotating Front Element
  • Rear Gel Filter Holder
  • Shorter and about 35% lighter than 16-35 f/2.8 L-Series Lens


Canon 17-40mm Specifications
9 groups /12 elements
Angle of view
104° - 57°
F stop range
Closest Focusing Distance
0.28m / 0.9 ft.
Maximum Magnification
0.24 (at 40mm)
Filter Size
Dimensions (Length x Diameter)
3.3" x 3.8" / 83.5mm x 96.8mm,
500g , 17.6 oz

Product Reviews

Login or Register to write the first review.