EF 17-40mm f/4L USM Lens Use_Macro This great low light performer

This great low light performer makes the most of any available ambient light thanks to its constant f/2

Machined aluminum GorillaPod plus precision-engineered ball head with Arca-Swiss® compatible quick release plate

The nine-blade rounded diaphragm creates a smooth and rounded bokeh

Optimal Anti-Reflective Performance

The lens boasts a large maximum aperture of f/2

EF 17-40mm f/4L USM Lens Use_Macro This great low light performerYour ultra wide angle zoom for outstanding landscapes Choose from ultra wide or standard zoom From ultra wide angle zoom on full frame cameras or a standard zoom on DSLR's with APS C sensors, on which this lens delivers 28 70mm equivalent. Constant f 4 maximum aperture for complete control Maintaining a f 4 maximum aperture means there is no need to vary shutter speed or ISO as you zoom. Super Spectra lens coating for impeccable colour Super Spectra