Amazon.com : NEEWER Lens Mount Adapter Manual Focus Ring Compatible with Pentax K Mount Lens to Sony E Mount Camera Including Alpha 1 A9 A7 A7C A7R A7S A6600 A6400 A5000 NEX-7
Pentax K SLR Lens to Sony Alpha A-Mount Camera Bodies – Fotodiox, Inc. USA
Fotodiox Pro Lens Mount Adapter - Pentax K AF Mount (PKAF) DSLR Lens to Nikon F Mount SLR Camera Body with Built-In De-Clicked Aperture Control Dial - Walmart.com
MonsterAdapter LA-KE1 review: Get Eye AF with your Pentax lenses on Sony E- mount: Digital Photography Review
Amazon.com : Fotodiox Pro Lens Mount Adapter Compatible with Pentax K Auto Focus Mount (PK AF) DSLR Lenses to Nikon Z-Mount Mirrorless Camera Bodies : Electronics
Pentax K-mount - Wikipedia
Pentax 6x7 Mount Lens to Arri PL Mount Cameras - Pro Lens Adapter – Fotodiox, Inc. USA
Pentax (lens) - Wikipedia
Pentax prime lenses - a guide to great vintage and modern lenses, from Takumar to today's D FAs - YouTube
Vello Pentax K Lens to Nikon F-Mount Camera Lens Adapter
Urth Pentax K to Sony E Lens Mount Adapter | Urth International