ROLANPRO Lens Protective Cover for Canon RF 600mm F4 L IS USM Camouflage Rain Cover Lens Protective Sleeve The lens clothing for Canon RF 600mm F4 L IS USM consists of 7 components. Rolanpro lens case 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 cloth 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 protection case, 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 L size rain cover when used in the rain.