Canon 17-40/4.0 EF-L USM Zoom Lens (IMP)
Canon AF Zoom Lenses

Affordable L-series ultra wide angle zoom ideal for both film and digital SLRs!
# 8806a002i

Canon 17-40/4.0 EF-L USM Zoom Lens (IMP) Description

• Canon 17-40/4.0 EF-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.
• Both Canon's full-time manual focus and a powerful ring-type USM for fast and silent AF.
• Constant f/4 maximum aperture.
• Permits use of both screw-in 77mm filters or up to 3 gel filters in the rear with a separately purchased gel filter holder.
• Weather-resistant construction similar to other high-end L-series lenses.
• Lens Construction: 12 elements in 9 groups.
• Diagonal Angle of View: 104? -57? 30'.
• Focus Adjustment: Inner focusing system with USM.
• Closest Focusing Distance: 0.28m / 0.9 ft.
• Zoom System: Rotating Type.
• Filter Size: 77mm.
• Max. Diameter x Length: 3.3" x 3.8".
• Weighs 1.1 lbs. / 500g.