Hasselblad: Which lenses mount on which cameras?

The H4D and H5D take the HC series lenses, or the V-system lenses with an adapter. And to satisfy the "crop factor" popcorn-eaters, there are also HCD lenses which are only appropriate for the smaller-sensor versions of the backs - they're sort of the Hasselblad version of APS-C-only lenses for DSLRs based on 35mm camera systems (like Nikon DX or Canon EF-S lenses). Whether or not you can use the HCD lenses depends on which back your 'Blad has.