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  2. List of standard zoom lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_standard_zoom_lenses

    There is no precise definition of the term, but lenses marketed as "standard zoom" usually cover a range of at least 30mm to 70mm in terms of 35mm equivalent focal length with an optical zoom ratio of 2.5× (e.g. 28-70mm) to 5× (e.g. 24-120mm) — the most common being 3× (e.g. 24-70mm). [1]

  3. Fujifilm G-mount - Wikipedia

    en.wikipedia.org/wiki/Fujifilm_G-mount

    The Fujifilm G-mount is a type of interchangeable lens mount designed by Fujifilm for use in the cameras of their Fujifilm GFX series. These cameras have interchangeable lenses . The respective lenses are designed for 43.8 mm x 32.9 mm medium format sensors.

  4. 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 ...

  5. 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 ...

  6. Lenses for SLR and DSLR cameras - Wikipedia

    en.wikipedia.org/wiki/Lenses_for_SLR_and_DSLR...

    For example, a 100 mm to 400 mm lens may have a maximum aperture of f/4.0 at the 100 mm end but will diminish to only f/5.6 at the 400 mm end of the zoom range. Zoom lenses with constant maximum apertures (such as f/2.8 for a 24–70mm lens) are usually reserved for lenses with higher build quality and are thus more expensive than those with ...

  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. List of Micro Four Thirds lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Micro_Four_Thirds...

    The Micro Four Thirds system (MFT) of still and video cameras and lenses was released by Olympus and Panasonic in 2008; lenses built for MFT use a flange focal distance of 19.25 mm, covering an image sensor with dimensions 17.3 × 13.0 mm (21.6 mm diagonal). MFT lenses have been produced by many companies under several different brands ...

  9. List of Sony E-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Sony_E-mount_lenses

    "Standard E-mount" series for the APS-C and Super-35mm image format. FE "Full-frame E-mount" series for 35mm full-frame image format. G "Gold" series, Sony's line-up of high-grade lenses. GM "Gold Master" series, Sony's line-up of ultra high-grade lenses. LE "Light Edition", lenses designed to be particularly light. OSS

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