ROLANPRO Lens Cover for Canon RF 600mm F4 L IS USM, strictly designed to ensure it doesn't affect your lens's manual focus and auto focus function; Using environmentally friendly materials, ROLANPRO lens cover is free from any unpleasant smells, helping you enjoy the fun of photography; When the ROLANPRO lens cover installed, the focus ring can be turned independently, the zoom ring rotation damping will not change. The control switch window further enhances usability and the lens hood still can be fixed in reverse; Protection from bumps, dings, nicks, and the elements Like water, sand, dust etc. The surface of the fabric is treated with waterproof, Effective cushioning and collision prevention, and Excellent waterproof effect. ROLANPRO Waterproof Lens Cover for Canon RF 600mm F4 L IS USM Camouflage Rain Cover Lens Protective Sleeve The lens cover for Canon RF 600mm F4 L IS USM consists of 7 components. Rolanpro lens clothing are designed and produced in strict with the lens function, and will not affect the manual focus and auto focus. The materials are environmentally friendly and have no smell. When the lens clothing installed, the focus ring can be turned independently, the zoom ring rotation damping will not change, and the control switch has a window. There are gap on the split structure of lens cover, it can't be used in the rain. The water repellency of fabrics will decrease gradually with the increase of use time. Please choose a suitable rain cover when used in the rain.