M39 Lens to Pentax Q Adapter

- Focusing infinity.
- No ROM connection on the adapter.
- Diaphragm control of the lens is set manually.
- Automatic diaphragm, auto-focusing,or any other functions will not operate correctly while using this adapter.
- "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.