Camera Eyecup for to prevent light entry due to BShutter/bulb shutter long exposure.A great accessory for all photographers. Provides protection for camera eyepiece and keep the camera viewfinder from dust. Soft rubber for comfort and protect your eyes. DK19 Eyecup for , replaces your lost, damaged or broken eyepiece. Suitable for the professional technicians. Compatible with: D810 D800 D810A D800E D700 D5 D500 D4s D4 DF D3s D3X D2Xs D2X D2, D3 Series, etc colour:black Material:rubber Package Contents: 2 * Eyecup for Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.