This seamless clamp on gear ring clamps securely around the focus barrel of your lens by tightening one little screw (allen key is included). Once tightened, the slit in the ring disappears and makes the ring seamless. The tooth size is M0,8.
Securely mount the Vocas EL-40 Loupe to your Sony Z300. Includes a magnetic friction bracket to prevent LCD drooping and ensure a stable viewing angle.