The Impossible Project was created by a small group of former Polaroid employees who saved the last Polaroid integral instant film production plant in Enschede, Netherlands. They began inventing and producing a complete line of unique instant film materials designed for traditional, once extinct Polaroid cameras.The current edition of the PX 600 Silver Shade + Instant Film features a special UV filter coating for improved black and white tones, and features a black matte outer frame instead of the traditional white.PX Silver Shade Film UV+ is an experimental monochrome material optimized for the use in traditional Polaroid 600 and SX-70 (requires optional ND filter) cameras, and will produce changing results depending on light conditions and temperature.