Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens with Pouch and Lens Hood - Grey Market -
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.
One reason why the Canon 17-40mm is popular is because of its Fast / accurate auto-focus.
- Rear Gel Filter Holder
- Close Focusing to 11 inches
- Optimized for Digital Imaging
- High Speed Rear Focusing
- Shorter and about 35% lighter than 16-35 f/2.8 L-Series Lens
- Non Rotating Front Element