The automatic NOVOFLEX Reverse Adapter opens up the world of extreme close-up photography with outstanding quality for owners of Canon EOS wide-angle or zoom lenses. The NOVOFLEX automatic reverse adapter lets you reverse mount the lens on the camera. The ring transfers all control functions. The NOVOFLEX automatic reverse adapter is supplied with a standard 58 mm filter diameter. Stepping rings are available for other filter sizes. The NOVOFLEX Auto Reverse Adapter can also be combined with the NOVOFLEX universal bellows to form full-fledged smart bellows.