• For EF 85mm f1.8 EF 100mm f2.0 EF 135mm f2.8, EF 100-300mm f4.5-5.6USM, EF 75-300mm f4.5-5.6 Lens • Prevent unexpected damage to prevent fingers from accidentally touching the surface of the lens. It can also provide some protection from wind, sand, rain, and snow • Not only does it block harmful light during shooting, it also protects the lens from abuse when traveling or shooting • No dark angles, bayonet can be reversed for storage and prevents the sides from blocking the light source • Using a standard lens cover on a wide angle lens head is inevitable that the result of image formation around the screen. On the contrary, it cannot be used as a sun shade. When using a zoom lens, it is recommended to use a self-telescopic cover