IMPOSSIBLE PX SHADE
The Impossible PX Shade was developed for use with folding Polaroid SLR (folding SX 70 or SLR 680) cameras to immediately and easily protect your Impossible images upon ejection from the camera.
To attach the PX Shade to your SX 70 or SLR 680 camera, open the film compartment of your camera. Insert the PX Shade, the narrow metal rail ahead, into the gap between the metal rollers and the black flap. You may need to slightly pull down the leather cover on the bottom of your camera to allow the metal rail to fully eject from the camera. Finally pull the metal rail until the PX Shade is in its operating position.