Don Zeck Lens Cap for Nikon 500mm f/4.0 VR Lens Finally, a practical and effective lens cap to protect your front element from scratches, dust, rain, and other hazards! This improved design features a handle to facilitate mounting or removing the lens cap while the lens hood is in the shooting position. The cap can be mounted on the lens while the hood is in the shooting position orin the stored position. The handle allows a firm grip on the cap so that it can be easily installed. The handle will compress for easy storage while your lens is in it's case.