A teleconverter allows you to increase the apparent focal length of a lens, giving you a greater telephoto effect than a lens alone. Teleconverter is a secondary lens which is mounted between the camera and a photographic lens, its job is to enlarge the central part of an image obtained by the objective lens. Teleconverters are favorite accessories of nature and wildlife photographers, because they allow them to extend the photographic reach beyond what might be safe when on safari or in an unfamiliar location.

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