LensCoatA(R) for the Tamron SP 150-600mm f/5-6.3 Di VC LensCoatA(R) Tamron SP 150-600mm f/5-6.3 Di VC 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) Tamron SP 150-600mm f/5-6.3 Di VC features a clear plastic windows over the auto focus controls and also the distance scale. A small hole on the last segment lines up with the red dot indicator, making it easy to quickly line up your lens with camera mount even with the cover installed. *This cover comes with an optional piece for the lens is zoomed out to 600mm which can be quickly and easily put on and removed with its Velcro attachment as seen in the picture. also the kit comes with 2 additional pieces for when the lens is used with the rotating tripod collar- not seen in the picture.