Pentax 645 adapters

Just purchased the 645 body and wanted to know if there are any good adapters out there that I could buy other lens for eg Mamiya/Hasselblad etc

Thanks

There is an adapter to fit Pentax 67 lenses.

SRB Griturn would be able to advise on anything else that's available, although I suspect we are in expensive territory here, not casual dabbling.

Hasselblad lenses can be used, but Mamiya ones can't, due to registration length differences. Check ebay for adapters, though I've no idea of quality or cost.