Focal Length: 100mm
Maximum Aperture: 2.8
Minimum Aperture: 32
Lens Construction : 12 elements in 8 groups
Diagonal Angle of View : 24o
Focus Adjustment : Inner focusing system with USM
Closest Focusing Distance : 0.31m / 1 ft. (film plane to subject)
Filter Size : 58mm
Dimensions (D x L): 79.0mm x 119.0mm (3.1" x 4.7")
Weight: 600g (21.1oz)