LensCoat for the Nikon 400mm VR fl LensCoat Nikon 400mm VR fl is telephoto lens cover offers your valuable equipment some protection from scrapes and bumps, preserving its resale value. It also helps break up the shape of your lens, making it less noticeable to wildlife. The LensCoat Nikon 400mm VR fl features a clear plastic Windows over the auto focus controls, Extender switch, and also the distance scale.