Large format

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Large format photography refers to any imaging format of 9 cm × 12 cm (3.5 in × 4.7 in) or larger. Large format is larger than "medium format", the 6 cm × 6 cm (2.4 in × 2.4 in) or 6 cm × 9 cm (2.4 in × 3.5 in) size of Hasselblad, Mamiya, Rollei, Kowa, and Pentax cameras (using 120- and 220-roll film), and much larger than the 24 mm × 36 mm (0.94 in × 1.42 in) frame of 35 mm format. The main advantage of a large format, film or digital, is a higher resolution at the same pixel pitch, or the same resolution with larger pixels or grains which allows each pixel to capture more light enabling exceptional low-light capture. A 4×5 inch image (12.903 mm²) has about 15 times the area, and thus 15 times the total resolution, of a 35 mm frame (864 mm²). Large format cameras were some of the earliest photographic devices, 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.