Large format (photography)
Large format refers to any imaging format of 4×5 inches or larger. Large format is larger than "medium format", the 6×6 cm or 6×9 cm size of Hasselblad, Rollei, Kowa, and Pentax cameras, and much larger than the 24×36 mm frame of 35 mm format. The main advantage of large format, film or digital, is higher resolution. A 4×5 inch image has about 16 times the area, and thus 16× the total resolution, of a 35 mm frame. In early photography, large format was all there was, and before enlargers were common, it was normal to just make 1:1 contact prints from a 4×5, 5×7, or 8×10-inch negative. The most common large format is 4×5 inches, which was the size common cameras used in the 1930s-1950s, like the Graflex Speed Graphic and Crown Graphic, among others. Less common formats include quarter-plate, 5×7 inches, and 8×10 inches; the size of many old 1920s Kodak cameras are 11×14 inches, 16×20 inches, 20×24 inches, various...