The Canon EF 75-300mm f/4.0-5.6 III is a compact and lightweight 4x telephoto zoom lens ideal for shooting sports, portraits, and wildlife. This lens is compatible with full-frame and APS-C format Canon DSLRs. The optical system, construction, and exterior are the same as the EF 75-300 mm f/4-5.6 III USM. The difference is that this lens uses a DC motor instead of a USM to drive the AF.