A medium-format camera uses film or a sensor larger than the 35mm format (36 x 24 mm) but smaller than large format (4 x 5 inches and up). Film medium format usually means 120 or 220 roll film, with frame sizes such as 6 x 4.5, 6 x 6 and 6 x 7 cm.
In digital photography, medium format means a sensor larger than full frame. A common size is about 44 x 33 mm. The larger area gives more detail, smoother tones and a different look to depth of field.
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