Allows you to reverse mount a Minolta AF/Sony lens.
49mm reversing ring. This only allows the reversed lens to be used at full aperture
55mm reversing ring. This has an additional ring which engages with the rear of the lens and enables you to manually adjust the diaphragm. It simply allows the diaphragm to be moved variably between open and closed. It does not enable the selection of a specific aperture.
Use SRB~Griturn SPACER RINGS between the camera and the ring to increase magnification. Use SRB~Griturn STEPPING RINGS to use with a lens having another size filter thread. These adaptors allow ANY lens with the appropriate filter thread to be reverse mounted.