Canon EF 17-40mm f4L USM Lens Improved behavior of automated tracks

Improved behavior of automated tracks under VCA control

Switchable-Mode HDMI Inputs

so you can safely use it outdoors or in wet weather

Life-size 1:1 maximum magnification pairs with a 10

Contoured for comfortable low-angle shooting

Canon EF 17-40mm f4L USM Lens Improved behavior of automated tracksCanon EF 17 40mm f4L USM Lens Key Features EF Mount Lens Full Frame Format Aperture Range: f 4 to f 22 One Super Ultra Low Dispersion Element Three Aspherical Element Super Spectra Coating Ring Type Ultrasonic Motor AF System Weather Sealed Construction Rounded 7 Blade Diaphragm Spanning a versatile wide angle Range, the EF 17 40mm f4L USM Lens is a Canon L series zoom featuring a constant f4 maximum aperture along with a sophisticated optical design