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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.
- 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)
- Filter Size: 58mm
- Max. Diameter x Length, Weight: 3.1" x 4.7", 21.1 oz. / 79.0 x 119.0mm, 600g