Canon EF 17-40mm f/4.0L USM
|I own it||I want it||I had it|
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.
|Lens type||Zoom lens|
|Focal length||17–40 mm|
|Lens mount||Canon EF|
|Min focus||0.28 m (11.02″)|
|Weight||500 g (1.10 lb)|
|Length||97 mm (3.81″)|
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