extended zoom lens |
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| navigate by keyword : angle aperture assembly autofocus comes complexity compromises convenience cost dimensions elements extended fixed focal image length lens mechanical opposed performance quality some thus variable varied view weight which zoom |
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| A zoom lens is a mechanical assembly of lens elements for which the focal length and thus angle of view can be varied, as opposed to a fixed focal length FFL lens. The convenience of variable focal length comes at the cost of complexity - and some compromises on image quality, weight, dimensions, aperture, autofocus performance, and cost. |
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