Lomography Diana F plus 35mm Back Door with Four Plastic Frames Two integrated exposure counters tell you the precise frame you&#8217;re on. Fully interchangeable and can be easily installed and removed. Package includes the Diana+ 35mm Back, four plastic frames (one for each format) and full documentation. Now be able to shoot 35mm film 5 different ways: standard frame, square, square over the sprockets, panoramic, and panoramic over the sprockets. Easy to use and works with any Diana+ or Diana F+ camera.