EF 75-300mm f4-5.6 III USM

introduced 1999

This replaces the EF 75-300mm f4-5.6 II USM lens. The new lens looks similar to its predecessor, but includes a metal ring on the front part of the zoom ring to provide a touch of luxury. The main difference is that a new micro-USM (ultrasonic motor) has been used.

EOS magazine, March 1999, page 9

Focal length and maximum aperture: 75-300mm 1:4-5.6
Lens construction: 13 elements in 9 groups
Diagonal angle-of-view: 32°11'-8°15'
Focus adjustment: front group rotating extension system with micro USM
Closest focusing distance: 1.5 m/ 4.9 ft., 0.25 x magnification
Zoom system: rotation type
Filter size: 58mm
Max. diameter x length, weight: 71 x 122mm, 480g