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.

Angle of View	20° . 14° . 24 °
Construction	8 - 12
No of Diaphragm Blades	8
Minimum Aperture	32
Closest Focusing Distance(m / ft)	0.31 / 1.0
Maximum Magnification(x)	1
Drive System	Ring-type USM*1
Distance Scale	o
Water / dust-resistance	-
Filter Size(mm)	58
Maximum Diameter x Length(mm / in)	78.6 x 118.6 / 3.1 x 4.7"
Weight(g)	580
With Extender EF1.4XII attached
Focal Length(mm)	-
Maximum aperture(f/)	-
Maximum magnification(x)	-
AF	-
IS	-
With Extender EF2XII attached
Focal Length(mm)	-
Maximum aperture(f/)	-
Maximum magnification(x)	-
AF	-
IS	-

*1	Equipped with a full-time manual mechanism.