Blackmagic Design elaborates on the cinema lenses that can be paired with the mighty sensor of the URSA Cine 17K 65. In the list are medium format lenses like Leitz Thalia, Tribe7 Blackwing7, TLS Mamiya 645, White Point Optics WPO TS70, and of course the ARRI Rental DNA designed for the ALEXA 65.
Source: Which Cinema Lenses Can Be Used With the URSA 65? – Y.M.Cinema Magazine