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  2. Double-Gauss lens - Wikipedia

    en.wikipedia.org/wiki/Double-Gauss_lens

    Its still photography version, the Zeiss Biotar 58mm f /2 (Germany) appeared on the Ihagee Kine Exakta (1936, Germany), the first widely available 35mm single-lens reflex cameras, in 1939. It was also the standard lens on the VEB Zeiss Ikon (Dresden) Contax S (1949, East Germany), the first pentaprism eye-level viewing 35mm SLR. [7]

  3. Canon II - Wikipedia

    en.wikipedia.org/wiki/Canon_II

    Where the Canon cameras surpass the Leica is the finder. Viewfinder and rangefinder are integrated, and a three-way switch allows a view for 50mm, 100mm, and critical rangefinder use. This arrangement made the viewfinders on Canon II/III/IV cameras tend to be dimmer and less brilliant than their counterparts found in Leica or other Barnack ...

  4. Comparison of digital SLRs - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_digital_SLRs

    Canon: 5D Mark II: Full frame: 21.1 EF: 98 35 9 50 25600 3.9 3 yes yes CF: 152x114x75 810 Sep 2008: Canon: 6D: Full frame: 20.2 EF: 97 63 11 50 102400 4.5 3 yes yes SD: 145x111x71 755 (680 without battery) Sep 2012: Archived 2015-10-31 at the Wayback Machine: Canon: 7D Mark II: APS-C: 20.2 EF, EF-S: 100 252 65 100 51200 10 3 yes yes CF+SD ...

  5. Lenses for SLR and DSLR cameras - Wikipedia

    en.wikipedia.org/.../Lenses_for_SLR_and_DSLR_cameras

    Note that while an EF-S lens cannot be mounted on a camera that uses the EF mount, EF lenses can be mounted on cameras designed for the EF-S standard: for this reason, EF-S cameras carry both a red dot and a white dot on the mount. As noted above under focal length, Canon makes DSLRs with various sensor sizes, and all using the EF or EF-S lens ...

  6. List of large sensor fixed-lens cameras - Wikipedia

    en.wikipedia.org/wiki/List_of_large_sensor_fixed...

    Fujifilm FinePix X100. This is a list of large sensor fixed-lens cameras, also known as premium compact cameras or high-end point-and-shoot cameras.These are digital cameras with a non-interchangeable lens and a 1.0‑type (“1‑inch”) image sensor or larger, excluding smartphones and camcorders.

  7. Twin-lens reflex camera - Wikipedia

    en.wikipedia.org/wiki/Twin-lens_reflex_camera

    A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens" (the lens that takes the picture), while the other is used for the viewfinder system, [ 1 ] which is usually viewed from above at waist level.

  8. Lens speed - Wikipedia

    en.wikipedia.org/wiki/Lens_speed

    A fast prime (fixed focal length) lens, the Canon 50mm f / 1.4 (left), and a slower zoom lens, the Canon 18–55mm f / 3.5–5.6 (right); this lens is faster at 18mm than it is at 55mm. Lens speed is the maximum aperture diameter, or minimum f-number , of a photographic lens .

  9. List of Minolta A-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Minolta_A-mount_lenses

    Fisheye lens; first 600 units used a different barrel construction internally; [17] optically similar to the Minolta MC Fish-Eye Rokkor 16mm f / 2.8 (a.k.a. Leica Fisheye-Elmarit-R 16mm f / 2.8) produced up to 1981 with an optical design originally introduced in 1966/1968.