Overview
The EF 17-40mm f/4L USM is an ultra wide-angle zoom lens that offers excellent image quality and a constant maximum aperture. Its compact, lightweight body makes it an ideal travelling companion.
Highlights
- Superb optical performance throughout the zoom range
- Fast autofocus speed
- Highly resistant to dust and moisture
- 28cm minimum focusing distance at all focal lengths
In The Box
- Canon EF 17-40mm f/4L USM Lens
- Lens Hood (EW-83E)
- Rear Lens Cap
- Front Lens Cap (E-77U)
- Software CD-ROM
Specifications
- Supporting DSLR type:
- Full Frame
- APS-C
- Lens construction: 12/9 (elements/groups)
- No. of diaphragm blades: 7
- Minimum Aperture: 22
- Closest focusing distance: 0.28m
- Maximum magnification: 0.24x (at 35mm)
- AF actuator: USM
- Filter diameter: 77mm
- Max. diameter x length: 83.5 x 96.8mm
- Weight: 500g