Amazon.com : Fotodiox Pro Lens Mount Adapter, M42 Lens Focusing Helicoids - 16mm to 30mm for Carl Zeiss, Pentax Lenses : Camera Lens Adapters : Electronics
Pentax 645 - Carl Zeiss Jena Flektogon 50mm f4 MC
ZEISS 50mm f/1.4 ZK Manual Focus Lens for Pentax K-Mount
PLANAR 85mm F1.4 ZK 746 for ZEISS PENTAX | eBay
tokyo camera style — Hiroo Pentax LX with Zeiss 50mm Planar T lens
Zeiss Sonnar 150mm f/4 (Hasselblad) adapted to Pentax 645