Canon's widest rectilinear zoom ever made, covering an extreme 11-24mm on full-frame.
The Canon EF 11-24mm f/4L USM launched in 2015 as the world's widest rectilinear zoom lens for full-frame cameras. At 11mm on full-frame it provides a dramatic 126-degree field of view without the distortion of a fisheye. It was an engineering tour de force that demonstrated Canon's optical capability.
Optical quality is remarkable for such an extreme wide angle with well-controlled rectilinear distortion and good sharpness across the frame. The Subwavelength Structure Coating and Air Sphere Coating control flare. Ring USM provides fast silent AF. Build is professional L-series with weather sealing.
Canon EF mount only. The bulbous front element means no front filter thread — rear gelatin filters only. The RF 10-20mm f/4L IS STM succeeded it for mirrorless with an even wider perspective and IS. The Sigma 12-24mm f/4 DG HSM Art offers a similar range at lower cost.
Holds significant value used due to its unique capabilities. Check the bulbous front element very carefully for scratches or impacts — replacement is extremely expensive. Test at 11mm for corner performance. A specialty lens for photographers who specifically need extreme wide-angle rectilinear coverage.