Canon EF 100mm f/2.8L IS USM Macro Lens for Canon Digital SLR Cameras
100 mm focal length and 1:2.8 maximum aperture. The EF1.4X II/EF2X II extenders cannot be used with this lens. There are no compatible close-up lenses.
Lens construction consists of 15 elements in 12 groups.
23.4-Degree diagonal angle of view