The lens pictured is the Jupiter-9 in Kiev bayonet mount. It was intended for use on
Kiev 10 (Automat) and similar cameras. It cannot be adapted to Pentax K. To best of my knowledge, there are no commercial adapters to any current lens mount. Here is a link to a discussion about a home-built adapter to Canon FD for use on a Lens Turbo:
http://www.dpreview.com/forums/post/51912995
Steve
---------- Post added 08-20-14 at 10:41 AM ----------
Originally posted by boriscleto It was made in Zenit M39 & M42 and for Kiev/Contax rangefinders.
You forgot a couple. The short list includes:
- M39 LTM (Leica thread mount) rangefinder
- M39 Zenit SLR
- M42 screw mount SLR
- Contax/Kiev rangefinder
- Kiev Automat bayonet
Steve
(...owns a couple of J-9s in two different mounts...)