Large format refers to any imaging format of 4×5 inches (102×127 mm) or larger. Large format is larger than "medium format", the 6×6 cm (2¼×2¼ inch) or 6×9 cm (2¼×3½ inch) size of Hasselblad, Rollei, Kowa, and Pentax cameras (using 120- and 220-roll film), and much larger than the 24×36 mm (~ 1.0x1.5 inch) 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. common modern method of copying is the use of large-format scanners. These digitize an image which can then be printed with a large-format plotter. As print and display technology has advanced, the traditional term "blueprint" has continued to be used informally to refer to each type of image. Scanography, also spelled scannography more commonly referred to as scanner photography, is the process of capturing digitized images of objects for the purpose of creating printable art using a flatbed "photo" scanner with a CCD (charge-coupled device) array capturing device. The term scanography formerly referred to medical scanning, but is unrelated in either purpose or technique. Fine art scanography differs from traditional document scanning by using atypical objects, often three dimensional, as well as from photography, due to the nature of the scanner's operation
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