M42 Lens Mount Adapter Ring to Pentax PK K-5 K-7 K-x K-r K-m

Features:
M42 to all Pentax PK mount adapter ring
Make M42 mount lenses (Zeiss, Pentax, Praktica, Mamiya, Zenit) can be used on Pentax PK cameras
There is no ROM connection on the ring so diaphragm control of the lens is set manually
It is possible to use Macro rings and other accessories
Suitable For:Pentax PK DSLR and Film SLR(as long as the body takes Pentax PK lens)
Made of metal (not plastic)
Color:silver
Package includes:Lens mount adapter x1
 
NOTICE:
Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter.
In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. You can shoot with manual mode or aperture priority mode .