The Canon EF 75-300mm f/4-5.6 III USM is a versatile telephoto zoom lens designed for Canon SLR cameras. Here are some key features: Focal Length: 75-300mm, ideal for capturing sports, portraits, and wildlife. Aperture: f/4-5.6, providing a decent range for various lighting conditions. USM (Ultra-Sonic Motor): Ensures quick and quiet autofocus. Compact and Lightweight: Weighs approximately 16.8 ounces, making it easy to carry around. Closest Focusing Distance: 4.9 feet, allowing for close-up shots. Angle of View: 32° to 8° diagonal.