LensCoat for the Olympus 300mm F4 LensCoat Olympus 300mm F4 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 Olympus 300mm F4 features a clear plastic Windows over the auto focus controls. 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. The 300 F4 cover is designed to allow you to slide the retractable hood. The cover extends back past the hood and when the hood is extended the focus ring is exposed. The kit includes a piece for when the rotating lens collar is not used