Focal Length f =4.0 ~ 9 mm Aperture Ratio 1 : F1.5 ~ 360 Board Mount, 1/3 inch Format Camera Mount Screw M12 CS Mount Product Board Mount Product 55014DC SCV D266B 550DC SCV D266S 8D SCV D490B 4D SCV D490S 2810DC SCV D922B 515DC SCV D922S 2982DC   358DC