- Elements/Groups: 12/9
- Diaphragm Blades: 7
- Focal Length: 17 - 40mm
- Aperture: Maximum: f/4.0, Minimum: f/22
- Camera Mount Type: Canon EF
- Format Compatibility: APS-C/full frame
- Angle of View: 104° - 57° 30'
- Minimum Focus Distance: 0.9 ft. / 0.28m
- Magnification: 4.17x
A new and 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.
|Official Release Date||May 23, 2003|
|Product Measures||10cm x 9.68cm x 8.35cm|