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. 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, Weddings, Wildlife, Wildlife photos and more.The Canon 17-40mm is most used by customers who consider themselves to be a 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, Lightweight, Nice bokeh, Rugged, Simple controls, Strong construction to mention just a few. Vendor Part # 8806A002
Construction: 9 groups /12 elements
Angle of view: 104° - 57°
F stop range: 4-22
Closest Focusing Distance: 0.28m / 0.9 ft.
Maximum Magnification: 0.24 (at 40mm)
Filter Size: 77mm
Dimensions (Length x Diameter): 3.3" x 3.8" / 83.5mm x 96.8mm,
Weight: 500g , 17.6 oz.
LP1319 Lens Pouch Case
EW-83-E lens Hood
Canon 1 Year Warranty