The Rolleiflex Hy6, also sold as the Leaf Digital AFi and Sinar Hy6, is a line of medium format single lens reflex cameras designed by Jenoptik for Rollei, introduced in 2006 and in intermittent production starting from 2008.

The Hy6 is a hybrid, accepting both analog film and digital image sensor backs, competing directly with the Hasselblad H-series.

[2] Each of the three companies planned to sell the same basic body, distinguished by their own backs:[3] Originally, the Hy6 was intended to be the core of an open system,[4] but after Jenoptik acquired a majority stake (51%) of Sinar in 2005,[5] the camera bodies were locked to Leaf, Sinar, and Rollei backs only.

[8] However, DHW Fototechnik also filed for bankruptcy in 2014, interrupting production until 2017, when assembly resumed in Braunschweig under DW Photo GmbH.

[15] The Hy6 uses the same physical lens mount first released with the Rolleiflex SLX in 1976 and subsequently updated for the 6000 System cameras.