By placing the distance between the camera body and the lens, the focusing distance is reduced and the magnification effect of the subject is created.

Therefore, Extension Tubes are usually used for macro photography and sometimes for close-up portraits. They can be used individually or connected together to achieve the desired focusing effect. They are fully automatic tubes, so they can communicate all electronic functions from the lens to the camera, including autofocus and auto exposure, and they have no optical elements, so they will not degrade the quality of your lenses.