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  2. 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" [1] relative to the phone's main camera. For example, 120mm is usually referred ...

  3. List of superzoom compact cameras - Wikipedia

    en.wikipedia.org/wiki/List_of_superzoom_compact...

    This is a list of superzoom compact cameras, also known as travel zoom cameras. [ 1 ] [ 2 ] These are small fixed-lens " point-and-shoot " digital cameras that have a high optical zoom ratio. These cameras all include a power zoom lens that retracts into the body when not in use, along with an automatic lens cover or lens cap.

  4. Closed-circuit television camera - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television...

    These cameras do not require a video capture card because they work using a digital signal which can be saved directly to a computer. The signal is compressed 5:1, but DVD quality can be achieved with more compression (MPEG-2 is standard for DVD-video, and has a higher compression ratio than 5:1, with a slightly lower video quality than 5:1 at best, and is adjustable for the amount of space to ...

  5. Olympus Camedia C-700 Ultra Zoom - Wikipedia

    en.wikipedia.org/wiki/Olympus_Camedia_C-700...

    The "Ultra Zoom" in the camera's name refers to its unusually wide 10:1 zoom range, being a significant increase over the more typical 3:1 zoom range of contemporary standard digital cameras. The lens is an Olympus aspherical glass zoom lens, 5.9 mm to 59 mm focal length, f/2.8 to f/3.5 aperture, 10 elements in 7 groups.

  6. List of superzoom lenses - Wikipedia

    en.wikipedia.org/wiki/List_of_superzoom_lenses

    Canon 24-240mm F4-6.3, a superzoom lens. This is a list of superzoom lenses, sometimes referred to as all-in-one lenses, that are designed for mirrorless cameras.. There is no precise definition of superzoom, but lenses marketed as such usually have an optical zoom ratio greater than 7×. [1]

  7. 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 . A true zoom lens or optical zoom lens is a type of parfocal lens, one that maintains focus when its focal length changes. [1]

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