The Canon EF 100mm f/2.8 USM Lens is a medium telephoto macro lens, which offers close-up magnification up to life size (1:1). The lens construction consists of 12 elements in 8 groups and 3 group floating systemfor good close-up performance. The Super Spectra coating on the lens suppress flare and ghosting and enhances color balance and contrast. This macro lens has 8 diaphragm blades and maximum viewing angle of 24 degrees.
This Canon EF lens has focal length of 100 mm and maximum aperture of f/2.8. The lens can be used onCanon EF mount. With dimensions of 78.6 x 118.6 mm, the lens weighs 580 g. The lens has maximum magnification of 1x and filter attachment size of 58 mm.
The lens has auto focus as well as full manual focus, which is controlled through the ring. The auto focus usesinner focusing system along with USM drive. The lens has closest focusing system of 0.31 m. The lens also has a focusing limiter switch for improving AF speed.