Focal Length & Maximum Aperture
100mm 1:2.8

Lens Construction
15 elements in 12 groups

Diagonal Angle of View
23.4°

Focus Adjustment
Inner focusing system with USM. Full-time manual focus available.

Closest Focusing Distance
0.99 ft./0.3m (maximum close-up magnification: 1x)

Filter Size
67mm

Max. Diameter x Length, Weight
3.1 x 4.8 in./77.7 x 123mm, 22.0 oz./625g