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supplementary lens

optics

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use in close-up photography

  • sequence of negative–positive process
    In technology of photography: Close-up and macrophotography

    Supplementary close-up lenses or extension tubes (placed between the lens and camera body) allow the camera to focus on near distances for large scales of reproduction. Special close-up rangefinders or distance gauges establish exactly the correct camera-to-subject distance and precise framing of the subject field.…

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