|Focal Length & Maximum Aperture||100mm 1:2.8|
|Lens Construction||12 elements in 8 groups|
|Diagonal Angle of View||24°|
|Focus Adjustment||Inner focusing system with USM|
|Closest Focusing Distance||0.31m / 1 ft. (film plane to subject)|
|Max. Diameter x Length, Weight||3.1" x 4.7", 21.1 oz. / 79.0 x 119.0mm, 600g|
A medium telephoto macro lens offering excellent picture quality and close-up magnification up to life size (1:1). Optimizing the optical power distribution reduces spherical aberration fluctuation during close-up photography, delivering constant high picture quality over all focusing distance. The inner focusing system makes the working distance (the distance from the lens to the subject) 149mm during life-size photography - twice the distance of the 50mm macro lens. Convenient operability is achieved with the easy full-time manual focus ideal for subtle adjustments of the focus position (a task in macro photography and the non-rotating front lens element. If the optional ring-type tripod mount B (B) (with an adapter for the EF100mm f/2.8 Macro USM) is used, switching between vertical and horizontal compositions without affecting the optical axis is a simple matter.
This Lens is compatible with all Canon Eos mount interchangable cameras.
Autofocus lens for macro photography up to life-size (1x) magnification. Inner focusing affords a long working distance of 5.9in. (149mm) at 1x. A 3-group floating system results in excellent delineation at all focusing distances. Ring USM for silent and high-speed AF, and full-time manual focusing also provided.