Overview

The Canon EF 75-300mm f/4.0-5.6 III is an entry-level telephoto zoom lens. Optically, it offers decent center sharpness at shorter focal lengths but suffers from softness at the long end and significant chromatic aberration. Build quality is basic with a plastic mount and rotating front element, making filter use tricky. Autofocus is slow and noisy. It suits beginners on a tight budget who need reach for outdoor daylight shooting, but serious users should consider alternatives.