Are you experiencing a lens that gets into focus before it even starts to thread in your camera? If yes, this adapter makes it possible to use m12 lenses that have a higher back focal length rating so they will achieve perfect focus.
This ring can also be used on any cs mount camera allowing use of m12x05 lenses.
Includes:
1- Step up ring
1- Focus holding spring
1- Threaded focus ring with rubber o'ring combo (for the tightest hold without using glue)
