CANON EF 300mm F4L IS USM Lens

The EF 300mm f/4L IS USM Lens from Canon is a telephoto prime lens with two-mode optical image stabilization which compensates for camera shake up the equivalent of two shutter speed stops. Stabilizer Mode 1 corrects vibrations in all directions and is mainly effective for shooting still subjects and Stabilizer Mode 2 steadies the image when panning vertically or horizontally.