Overview
Overview
The Canon 17-40mm USM L-Series Zoom f/4.0 is an affordable L-series ultra-wide-angle zoom lens that is ideal for both film and digital SLRs. Superior optics are assured by 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" (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/4.0 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.
Specifications:
- Focal Length: 17-40mm
- Maximum Aperture: f/4.0
- Lens Construction: 12 elements in 9 groups
- Diagonal Angle of View: 104° - 57°30'
- Focus Adjustment: Inner focusing system with USM
- Closest Focusing Distance: 11" (0.28m)
- Filter Size: 77mm
- Diameter x Length: 3.3" x 3.8" (83.5mm x 96.8mm)
- Weight: 1.1 lb (500g)
What's in the Box
- Lens Case
- Rear Cap
- Front Cap
- EW-83E Lens Hood
- Canon 17-40mm USM L-Series Zoom f/4.0
Specifications
Specifications
Key Highlights
- 17-40mm f/4.0 Zoom
- 77mm filter threads & gel filter holder
- Close Focus: 11" (0.28m)
- EF Mount
Lens Characteristics
Prime or Zoom:
Zoom
Lens Mount:
EF
Max Aperture F-stop:
f/4
Focus Scale:
Feet - Imperial
Filter Thread Size:
77mm
Zoom Range:
17-40mm
Max Dimensions (Diameter x Length):
3.3" x 3.8" - 83.5mm x 96.8mm
Elements & Groups:
12 elements in 9 groups
Minimum Focus Distance:
11" (0.28m)
Max Angle of View:
104degrees
Shipping
Width:
5.5 in
Height:
5.5 in
Length:
7 in
Weight:
1.85 lb
