Canon RF 400mm f2.8L IS USM filter minimizing lag and instability that

minimizing lag and instability that can occur when driving a large aperture focus lens group

WIR lightfastness ratings are based on accelerated testing of prints on specified media

Generating a torque approximately 1

The complex design features 22 lens elements configured in 16 different groups

Canon RF 400mm f2.8L IS USM filter minimizing lag and instability thatDelivering high performance for professional photographers as well as inheriting the optics of the EF 400mm f 2. 8L IS III USM model, the RF400mm F2. 8 L IS USM is the go to choice to help capture superb shots of sports, wildlife and more. Its optical image stabilization system with up to 5. 5 stops* of shake correction, including three IS operation modes, helps to deliver sharp results whether hand held or mounted on a monopod. For brilliantly clear