LensCoatA(R) for the Minolta 300 f2.8 HS APO LensCoatA(R) Minolta 300 f2.8 HS APO 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) Minolta 300 f2.8 HS APO features a clear plastic windows over the distance scale.