Canon EF 17-40mm f/4 L USM Zoom Lens with:
Canon EF 17-40mm f/4 L USM Zoom Lens
High-performance, ultra-wide zoom.
The Canon EF 17-40mm f/4 L USM is 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.
Ultrasonic Motor (USM)
Full-Time Manual Focus
Super UD Glass Element
Dust and Water-Resistant Construction
|Canon EF 17-40mm f/4 L USM Zoom Lens|
|– TECHNICAL SPECIFICATIONS –|
|Lens Mount:||Canon EF|
|Diagonal Angle of View:||104° - 57°30'|
|Maximum Magnification:||0.24x (at 40mm)|
|Minimum Focus Distance:||0.28m / 0.9 ft.|
|Lens Construction:||12 elements in 9 groups|
|Focus Type:||Auto with full-time manual|
|Dimensions (Diam. x Length):||3.3 x 3.8 in. (83.5 x 96.8mm)|
|Weight:||1.1 lb. (500g)|
Will mount to ANY Canon Digital SLR Camera, including:
Rebel SL1, T1i, T2i, T3i, T3, T4i, T5i, EOS 50D, 60D, 6D, 7D, 5D Mark II III, 1Ds Mark II III, 1D X