Canon EF 17-40mm f/4.0L USM Overview
Announced Feb 27, 2003
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Wideangle zoom lens | Canon EF | 8806A002
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Product description
Announced
Feb 27, 2003
Discuss in the Canon SLR Lens Talk forum
The Canon EF 17-40mm F4.0L USM has been on the market for many years now, but remains popular with Canon photographers using both full-frame and APS-C DSLRs (on which it covers an equivalent focal length range of 27-64mm). An extremely tough and compact lens, the 17-40mm does not get any larger when zooming or focusing, and the inclusion of three aspherical and one Super UD (Ultra-low Dispersion) elements result very good image quality across its focal range. This lens is weather-sealed, and a ring-type ultrasonic focus motor provides fast and silent AF with full-time manual focusing.
Product timeline
May 3, 2015
Mar 28, 2015
Aug 10, 2014
Feb 27, 2003
Quick specs
| Lens type | Zoom lens |
|---|---|
| Focal length | 17–40 mm |
| Image stab. | No |
| Lens mount | Canon EF |
| Max aperture | F4 |
| Min aperture | F22 |
| Min focus | 0.28 m (11.02″) |
| Max magnification | 0.24× |
| Weight | 500 g (1.10 lb) |
| Length | 97 mm (3.81″) |
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