Canon EF 17-40mm F4L USM

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  • $799.99
  • Regular price $999.95


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.

TECHNICAL CHARACTERISTICS
Lens Type
Wide Angle Zoom
Focal Length
17mm - 40mm
Focus Type
AF actuator with inner focusing system with USM
Manual
Lens Construction
12 elements in 9 groups (3 aspherical and 1 Super UD lens)
Minimum Focusing Distance
0.28m / 11.02"
Maximum Magnification
0.24x
Aperture Range
f/4.0 - f/22
Angle of View
104° to 57°
Diaphragm Blades
7.0
Mount
Canon EF
Filter Size
77mm
PHYSICAL CHARACTERISTICS
Dimensions
84mm x 97mm
Weight
500.0 grams
INCLUDED "IN THE BOX"
Accessories
Front Lens Cap
Lens Case
EW-83E Lens Hood
Rear Lens Cap