The optical system, construction, and exterior are the same as the EF 75-300mm f/4-5.6 III USM’s. The difference is that it uses a DC motor instead of a USM to drive the AF.
Compact and lightweight, this 4x telephoto zoom lens is ideal for shooting sports, portraits and wildlife. The newly developed Micro USM makes autofocusing quicker and quieter. The improved zoom mechanism also makes zooming smoother. The front part of the zoom ring now sports a silver ring for a luxury touch.