canon Canon EF 17-40mm f/4L USM Wide Angle Zoom Lens, Japan with EW-83E Hood, Caps & Box Written by admin on December 4th, 2023. Lens Mount: Canon EF. Focal Length: 17 to 40mm. There are a few light marks and dust on the outside of the lens due to previous use. The box has very little storage wear. Angle of View: 104° to 57° 30′.