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  2. Photo print sizes - Wikipedia

    en.wikipedia.org/wiki/Photo_print_sizes

    The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...

  3. Medium format - Wikipedia

    en.wikipedia.org/wiki/Medium_format

    The Leaf Aptus-II 12's sensor size of 53.7 mm × 40.3 mm is 92% of the area of a 56 mm × 41.5 mm standard-sized 6 × 4.5 frame, 69% of a 56 mm × 56 mm square-sized 6 × 6 frame, and 45% of the area of a 56 mm × 84 mm 6 × 9 frame. Introduced in December 2010, the Pentax 645D is a 40 megapixel medium-format DSLR. The camera has a 44×33 mm ...

  4. Advanced Photo System - Wikipedia

    en.wikipedia.org/wiki/Advanced_Photo_System

    Initial testing of APS film cartridges with 40-exposure rolls started in 1994; details about the magnetic-stripe information encoding [4] and formats were provided later that year, although the prototype "Standard" frame size, at that time, was narrower than the final APS-C frame, with a 7:5 aspect ratio, 23.4×16.7 mm (0.92×0.66 in). [5]

  5. Micro Four Thirds system - Wikipedia

    en.wikipedia.org/wiki/Micro_Four_Thirds_system

    Drawing showing the relative sizes of sensors used in most current digital cameras, relative to a 35mm film frame. The image sensor of Four Thirds and MFT measures 18 mm × 13.5 mm (22.5 mm diagonal), with an imaging area of 17.3 mm × 13.0 mm (21.63 mm diagonal), comparable to the frame size of 110 film. [4]

  6. Four Thirds system - Wikipedia

    en.wikipedia.org/wiki/Four_Thirds_system

    The name of the system stems from the size of the image sensor used in the cameras, which is commonly referred to as a 4/3" type or 4/3 type sensor. The common inch-based sizing system is derived from vacuum image-sensing video camera tubes, which are now obsolete. The imaging area of a Four Thirds sensor is equal to that of a video camera tube ...

  7. List of photographic film formats - Wikipedia

    en.wikipedia.org/wiki/List_of_photographic_film...

    Half-frame: cartridge 1934, later than Present 18 × 24 mm 48 or 72 135 film in "half-frame" cameras Minox: cartridge 1938 Present 8 × 11 mm 15, 36 or 50 nominally 9.5 mm-wide stock (in reality 9.2–9.3 mm) Karat cartridge 1936 1963 Early AGFA cartridge for 35 mm film Rapid cartridge 1964 1990s 24 × 24 mm 18 × 24 mm 12 16