WAAO Camera Eyecup Eyepiece DK-21 22MM Replacement Viewfinder Protector Compatible with Nikon DK21 D7000 D600 D80 D90 /D40 D50 D70S D90 D200 D300 (3 Pack) Replacement Eyecup for Nikon DK-21 22mm to prevent light entry due to bulb shutter long exposure. A great accessory for all photographers. Compatible with Nikon DK21 D7000 D600 D610 D80 D90 /D40 D50 D70S D90 D200 D300. Plastic body cushioned with soft rubber for comfort and protect your eyes. Provides protection for the camera eyepiece and keep the camera viewfinder away from dust. Package includes 3 pieces of Rubber Eyecup Eyepiece Replacement DK21. (Note: When the eyepiece auxiliary lens is attached, the eyepiece mercenary can not be used. )