LensCoatA(R) for the Nikon 17-55mm f2.8G LensCoatA(R) 17-55mm f2.8G 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 LensCoatA(R)17-55mm f2.8G features a clear plastic windows over the auto focus controls and also the distance scale.