Canon introduces 11-24mm f/4L USM wide angle zoom

Canon has added a new ultra-wide zoom to its EF lineup - the EF 11-24mm f/4L USM. The new lens offers the widest angle of view ever provided in a rectilinear full-frame DSLR lens, and uses 16 elements in 11 groups with a total of four aspherical elements for distortion control. Read more