EF 100mm f2.8 Macro USM

introduced 2000

Features include:
• macro photograph up to 1x magnification
• focusing range from 0.31 meters to infinity; limiting switch for focusing ranges from 0.31 meters to infinity and 0.48 meters to infinity
• Ring USM and inner focusing for high-speed, near-silent autofocusing
• lens construction of 12 elements in 8 groups
• minimum aperture of f32; 8 blades
• inner focusing system allows a lens-to-subject distance of 149mm at maximum magnification
• three-group floating system for high-quality immages at all focusing distances
• secondary diaphragm used to block stray light and increase image contrast
• wide focusing ring for easy manual focusing; full-time manual focusing in autofocus mode
• non-rotating front element allows use of Macro Ring Lite and polarising filters
• 58mm filter mount; up to two filters attatchable
• compatible with EF 12 and 25 extension tubes giving maximum magnification of 1.19x (picture field 30x20mm) and 1.30x (picture field 26x17mm) respectively.
• Tripod Collar B attachable via adaptor
• accessories include lens hood ET-67

EOS magazine, March 2000. page 7

Focal length and maximum aperture: 100mm 1:2.8
Lens construction: 12 elements in 8 groups
Diagonal angle of view: 24
Focus adjustment: ring-type USM, inner focusing system, full-time manual focus
Closest focusing distance: 0.31 m 1 ft., 1 x magnifcation
Filter size: 58mm
Max. Diameter x length, weight: 78.6 x 118.6mm, 580g

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