The Lock Ring M12x0,5 should be attached on the thread of a s-mount lens before screwing the lens in the Basler dart camera. The focus of a s-mount lens is adjusted by changing the intrusion depth of the lens in the camera mount. The optimum intrusion depth of the lens can be fixed by tightening the lock ring on the lens threat at the beginning of the mount.

One Lock Ring is enclosed with each s-mount lens. This product can be ordered as a spare part.