They are suitable for macro photography as they allow your lens to focus closer than the normal minimum focus distance. By placing the extension between the camera body and the lens, the focus distance is reduced, creating a magnification effect of the subject. Therefore, Extension Tubes are commonly 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, allowing all electronic functions from the lens to the camera to communicate, including autofocus and auto exposure, and they do not contain optical elements, so they will not degrade the quality of your lenses.