m12 Extender For RibCage (Required for Focus of Most Lenses)
Many m12 lenses have a back focal length that's longer than the M12 socket built into the Ribcage. This M12 to CS adaptor threads into the CS-Mount ring on your Ribcage to give you all the added flange distance you'll need to focus any M12 lens that needs more room. Lock your focus in with the included locking nut. Fine tune your focus with the adjustable flange distance on your Ribcage! Have a few lenses? Buy an adaptor for each one and lock in your focus for quick lens changes!
1x Aluminum M12 to CS adaptor ring
1x Aluminum locking nut
Lenses We Sell That Require This Adapter For Focus: