A totally revised version of the popular 100mm f/2.8 macro lens. Focusing over the full range from infinity down to life size (1:1 reproduction ratio), this lens will impress any serious photographer with its combination of versatility, image quality and superb handling. A high-performance ring type Ultrasonic Motor provides fast and silent AF throughout its focus range, and even more significantly, allows full-time manual focusing-- permitting the close-up or macro shooter to instantly override the AF whenever necessary.
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.
Entirely new optically, with a three-group floating system for exceptional close-up performance.
The first lens in its class to feature inner focusing-- lens length never changes, even at life size.
A secondary diaphragm blocks stray light at f/2.8, increasing contrast when shooting in backlit conditions.
Ultrasonic Motor provides outstanding AF speed at all focusing distances.
Wide manual focusing ring with smooth action, and full-time manual focus -- even in AF mode!
Accepts optional Tripod Collar B (B) via Tripod Collar Adapter ring.
Compatible with EF Extension Tubes EF12 and EF25 (magnifications to 1.39x with EF25).
Accepts new Lens Hood ET-67 ; Macro Ring Lite ML-3/MR-14EX connect directly to lens.
Specifications
Included Case:
Soft Case LP-1219 with zipper closure; no hard case available
Accessory Compatibility :
EF Extension Tubes, 250D/500D Close-up Lenses, Macro Ring Lites
Tripod Collar:
Optional (removable)
Lens Hood ET-67:
(Optional) Dedicated bayonet-mount hound, attachable in reverse
Light Loss @ 1:1::
Two Stops (only has to be considered if using separate hand-held meter) .
Diaphragm Blades:
Eight
Aperture Range:
f/2.8 - f/32, Canon Electro-Magnetic Diaphragm
Lens Focus Motor:
Ring-type Ultrasonic Motor (USM); full-time mechanical manual focus
Distance Limiter Switch:
0.31m - Infinity; and 0.48m - Infinity Drive System: Ring USM
Lens Coating:
Super Spectra multi-coating
Working Distance @ 1:1::
5.9 in. (distance from subject to front of lens, at closest focus setting)
Lens Construction:
12 elements in 8 groups, with 3 groups floating as lens focuses closer
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