Canon EF 300mm f/2.8L IS USM - Canon EF Mount

The Canon EF 300mm f/2.8L IS USM is a professional telephoto lens designed for sports, wildlife, and action photography. It features an Image Stabiliser (IS) system providing up to two stops of compensation and a fast Ultrasonic Motor (USM) for quiet, high-speed autofocus. The optical design includes fluorite and UD elements to minimise chromatic aberrations, delivering high contrast and sharpness even at the maximum aperture. Buyers should examine the condition of the magnesium alloy barrel for signs of heavy professional use. SDS tests the Image Stabiliser for quiet operation and ensures the autofocus motor tracks accurately. We check the internal optics for dust or fungal growth, which can occur in large telephoto lenses. The tripod collar should rotate smoothly, and the rear drop-in filter holder must be present and functional.