Product details:

Developed to succeed the EF75-300mm f/4-5.6 II this compact lightweight high-magnification telephoto zoom lens covers medium telephoto 75 mm to super telephoto 300mm. Like the EF75-300mm f/4-5.6 III USM it has a metal ring at the front of the zoom ring to give it an upscale image. It uses a DC motor as AF drive actuator. For environmental protection only lead-free glass lens elements are.