The Kodak Readyload Single Sheet 4x5 Film Holder works with Kodak Readyload Film in your 4x5 view camera. It holds one sheet of film at a time. The film is available in color negative and transparency, and black and white negative varieties.
Load the film in the holder, and the holder into the camera after you have set composition, focus and exposure. Pull the paper "dark slide" until it stops. Take the picture, then slip the slide back in all the way.
The price per sheet of film for this holder is approximately 40% more over that of conventionally boxed film that you load into holders yourself. The advantages are less exposure to dust, no need to pack multiple film holders or changing bag on location, less chance of double-exposure of film, and easier note entry on each film packet.