Canon EF 17-40mm f/4L USM
A new and affordable L-series ultra-wide-angle zoom lens that's ideal for both film and digital SLRs.
While an excellent ultra-wide zoom lens for film SLR cameras, the Canon EF 17-40mm f/4L USM Lens is especially well suited for use with EOS digital SLR cameras, which usually have an imaging sensor size smaller than the 35mm format.
- Superb optical performance throughout the zoom range
- Fastest AF speed within its class (same as the EF16-35 f/2.8L USM)
- Highly dust and moisture resistant
- 28cm minimum focusing distance at all focal lengths