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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. Crop factor - Wikipedia

    en.wikipedia.org/wiki/Crop_factor

    A 50 mm (focal length) lens on an APS-C image sensor format (crop factor 1.6) images a slightly smaller field of view than a 70 mm lens on a 35 mm sensor format camera (full frame sensor). A 80 mm lens (1.6 × 50 mm = 80 mm) with a full frame camera gives the same field of view as this 50 mm lens and APS-C sensor format combination produces.

  4. List of photographic film formats - Wikipedia

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

    120 × 90 mm Possibly discontinued 1924 or 1929 115 roll film 1898 1949 6 + 3 ⁄ 4 × 4 + 3 ⁄ 4 in 171.45 × 120.65 mm 116 roll film 1899 1984 2 + 1 ⁄ 2 × 4 + 1 ⁄ 4 in 63.5 × 107.95 mm Like 616 film with wider flanges 117: roll film 1900 1949 2 + 1 ⁄ 4 × 2 + 1 ⁄ 4 in 57.15 × 57.15 mm 6 Like 620 spool with 120 keyslot 118 roll ...

  5. Aspect ratio (image) - Wikipedia

    en.wikipedia.org/wiki/Aspect_ratio_(image)

    Print sizes are usually defined by their portrait dimensions (tall) while equipment aspect ratios are defined by their landscape dimensions (wide, flipped sideways). A good example of this a 4×6 print (6 inch wide by 4 inch tall landscape) perfectly matches the 3:2 aspect ratio of a DSLR/35 mm, since 6/2=3 and 4/2=2.

  6. Image sensor format - Wikipedia

    en.wikipedia.org/wiki/Image_sensor_format

    The common 1" outside diameter circular video camera tubes have a rectangular photo sensitive area about 16 mm on the diagonal, so a digital sensor with a 16 mm diagonal size is a 1" video tube equivalent. The name of a 1" digital sensor should more accurately be read as "one inch video camera tube equivalent" sensor.

  7. 35 mm equivalent focal length - Wikipedia

    en.wikipedia.org/wiki/35_mm_equivalent_focal_length

    35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...

  8. Image resolution - Wikipedia

    en.wikipedia.org/wiki/Image_resolution

    35 mm film is scanned for release on DVD at 1080 or 2000 lines as of 2005. The actual resolution of 35 mm original camera negatives is the subject of much debate. Measured resolutions of negative film have ranged from 25–200 LP/mm, which equates to a range of 325 lines for 2-perf, to (theoretically) over 2300 lines for 4-perf shot on T-Max 100.

  9. List of motion picture film formats - Wikipedia

    en.wikipedia.org/wiki/List_of_motion_picture...

    35 mm 1.33 spherical Biograph: Wm. Dickson & Herman Casler: 1895 Sparring Contest at Canastota: 68 mm 1.35 2.625" × 1.938" 1 perf, 2 sides (punched in-camera) spherical 68 mm spherical Joly-Normandin: Henri Joly: 1895 60 mm 5 perf, 2 sides spherical 60 mm spherical Biographe: Demeny-Gaumont: 1896 60 mm 1.40 1.750" × 1.250" unperforated ...

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