the holder is in the camera, the photographer removes the complete dark slide and inserts the half slide, then makes an exposure on half the sheet. The half dark slide is flipped over, and the other half of the film is available for a second shot. The practice originated with photographers taking pictures of groups of banquet attendees, giving these "banquet" formats their name. are the most commonly used of these formats. However, specialized large format banquet cameras were often used for this purpose. They rotated on a stand while exposing the film in a pass from one edge to the other. Jokesters often took advantage of this by getting on the end of the line of people being photographed and then running behind the group of people and standing on the other end of the line so that they show up on both ends of the resulting picture. Availability Despite the advancement of digital imaging, the market for sheet film is still healthy and thriving. As of February 2006, Eastman Kodak and Fujifilm manufacture black-and-white, color negative and color transparency sheet films. Ilford and Foma manufacture black-and-white negative sheet films (Efke, in Croatia, ceased production in June, 2012). Handling and film holders For more complete information, see the film holder article Most large format film is used double filmholders which, as the name implies, hold one sheet of film on each side of the holder. The holders must be loaded and unloaded in the dark to protect film from premature exposure. Some films were previously available in single-shot, pre-loaded, disposable envelopes which can be conveniently loaded into a special film holder in daylight (Kodak Readyload and Fuji Quickload). Each manufacturer made a film holder for its system's envelopes; the Polaroid 545/545i instant film holders also worked with both systems' films. In addition to eliminating dust problems, these daylight-loading systems reduced the amount of gear a photographer needed to carry to only a single film holder. However, as of 2014, no manufacturer offers quick-loading envelopes. There were several devices manufactured which held several (6-10) sheets of film in individual holders stacked like a pack of cards, and which then shuffled the front holder to the back of the unit after exposure. These devices included the Graflex Grafmatic, Graflex Film Magazine, Burke & James Kinematic, and Fuji QuickChange devices. They were very popular with photojournalists who often had to take several