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  2. Zoom lens - Wikipedia

    en.wikipedia.org/wiki/Zoom_lens

    A zoom lens is a system of camera lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens ( prime lens ). A true zoom lens or optical zoom lens is a type of parfocal lens, one that maintains focus when its focal length changes. [1] Most consumer zoom lenses do not maintain ...

  3. List of longest smartphone telephoto lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_longest_smartphone...

    This is a list of smartphones with a telephoto lens that offers a focal length (35mm equivalent) of at least 100mm or "4× optical zoom" with an imaging area equivalent to a 1/3.5″ or larger sensor. Smartphone lenses are often marketed in terms of "optical zoom" relative to the phone's main camera. For example, 120mm is usually referred to as ...

  4. Comparison of digital and film photography - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_digital_and...

    Compared to film, digital cameras are capable of much higher speed (sensitivity to light) and can perform better in low light or very short exposures. The effective speed of a digital camera can be adjusted at any time, while the film must be changed in a film camera to change the speed. [citation needed]

  5. List of tallest buildings in Columbus, Ohio - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest_buildings...

    Notes. 1. Rhodes State Office Tower. 624 (190) 41. 1973. 30 East Broad Street. The 5th- tallest building in Ohio and the tallest building constructed in Columbus in the 1970s. It is the tallest office building in Columbus and the tallest mid-block building in Ohio.

  6. Comparison of movie cameras - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_movie_cameras

    Arriflex 435 Xtreme. five-link movement. 2 (3-pin) 2. 0.1–150 frame/s in 0.001 frame/s increments up to 100 frame/s and 0.01 frame/s increments after. 0.1–150 frame/s in 0.001 frame/s increments up to 100 frame/s and 0.01 frame/s increments after. DC quartz-controlled, Xtal at all speeds.

  7. Canon EF 24-105mm lens - Wikipedia

    en.wikipedia.org/wiki/Canon_EF_24-105mm_lens

    The EF 24–105mm f/4L IS USM is an EF mount wide -to- telephoto zoom lens. It was introduced by Canon in 2005 to complement the well-regarded 17–40mm f/4L USM and 70–200mm f/4L USM . The EF 24–105mm f/4L IS USM lens is often compared to the other L series zoom of comparable range, the 24–70mm f/2.8L USM, losing one full stop but ...

  8. Varifocal lens - Wikipedia

    en.wikipedia.org/wiki/Varifocal_lens

    Varifocal lens. A varifocal lens is a camera lens with variable focal length in which focus changes as focal length (and magnification) changes, as compared to a parfocal ("true") zoom lens, which remains in focus as the lens zooms (focal length and magnification change). Many so-called "zoom" lenses, particularly in the case of fixed-lens ...

  9. Digital single-lens reflex camera - Wikipedia

    en.wikipedia.org/wiki/Digital_single-lens_reflex...

    Viewfinder eyepiece. A digital single-lens reflex camera ( digital SLR or DSLR) is a digital camera that combines the optics and mechanisms of a single-lens reflex camera with a solid-state image sensor and digitally records the images from the sensor. The reflex design scheme is the primary difference between a DSLR and other digital cameras.