100mm focal length with a life size (1x) macro magnification
3 group floating optical system delivers superb performance and excellent delineation
Ring type USM for silent and high speed AF
Optional tripod ring (Tripod Mount B)
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. The optional Tripod Mount Ring (B) B (with adapter) enables the lens to be rotated for vertical or horizontal framing.