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  2. Wide-angle lens - Wikipedia

    en.wikipedia.org/wiki/Wide-angle_lens

    Ultra wide angle lenses have a focal length shorter than the short side of the film or sensor [citation needed]. In 35 mm, an ultra wide-angle lens has a focal length shorter than 24 mm. Common wide-angle lenses for a full-frame 35 mm camera are 35, 28, 24, 21, 20, 18, and 14 mm

  3. Perspective distortion - Wikipedia

    en.wikipedia.org/wiki/Perspective_distortion

    Another result of using a wide-angle lens is a greater apparent perspective distortion when the camera is not aligned perpendicularly to the subject: parallel lines converge at the same rate as with a normal lens, but converge more due to the wider total field. For example, buildings appear to be falling backwards much more severely when the ...

  4. List of Sony E-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_Sony_E-mount_lenses

    Sony Lens Adapter E/A 4 2013 Mount adapter 35mm 160g LA-EA4 for A-mount lenses on full-frame E-mount camera, SLT-PD-AF with all AF lenses. [63] Sony Lens Adapter E/A 5 2020 Mount adapter 35mm 88g LA-EA5 only compatible with certain camera/lens combinations, [64] uses camera's on-sensor PD/CD AF (no mirror). [65] Sony Lens Adapter E/B 1 2019

  5. 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 ...

  6. Zeiss Biogon - Wikipedia

    en.wikipedia.org/wiki/Zeiss_Biogon

    The advent of the Biogon opened the way to more extreme wide-angle lenses. Bertele continued to develop his design, patenting an asymmetric wide-angle lens in 1952 that covered an astonishing 120° angle of view "and beyond, practically distortion free", by adding a strong negative meniscus front element to the Biogon design, showing influences from earlier fisheye lens designs, including the ...

  7. List of third-party Sony E-mount lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_third-party_Sony_E...

    Cine Lens 15mm T3.5 MicroPrime CINE Lens [486] 18mm T2.8 MicroPrime CINE Lens [487] 21mm T1.6 MicroPrime CINE Lens [488] 25mm T1.5 MicroPrime CINE Lens [489] 35mm T1.3 MicroPrime CINE Lens [490] 50mm T1.2 MicroPrime CINE Lens [491] 75mm T1.5 MicroPrime CINE Lens [492] Cine Lens 18mm f/2.8 Cine Lens [493] 21mm f/1.5 Cine Lens [494]

  8. Lenses for SLR and DSLR cameras - Wikipedia

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

    The maximum aperture for a zoom lens may be the same (constant) for all focal lengths, but it is more common that the maximum aperture is greater at the wide-angle end than at the telephoto end of the zoom range. 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 ...

  9. Camera lens - Wikipedia

    en.wikipedia.org/wiki/Camera_lens

    Different kinds of camera lenses, including wide angle, telephoto and speciality. A camera lens, photographic lens or photographic objective is an optical lens or assembly of lenses (compound lens) used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.