If your camera has a Polaroid 88mm x 108mm (3 1/4 x 4 1/4) film back for Type 100 instant pack film, it will work with either Fuji FP-series film (100C/3000B). Keep in mind what settings you will need to use when using such a high-speed film in a manual control camera like an RB67. FP-3000B is actually a little faster than ISO3000, so setting your camera the way you would for conventional ISO3200 120-format roll film should work just fine. This film will NOT work in 545-series backs for 4 x 5 peel-apart films, only the 3 1/4 x 4 1/4 packfilm backs. If you have a 545 film back or similar, you can only shoot expired Polaroid 50-series two-part sheet films. Fuji made a back for shooting their 4 x 5 packfilms (which are discontinued, but still available), but again, it will not work with this film.