This 18-55 mm f/1.2 lens is designed for use with the Brinno TLC200 PRO HDR Time Lapse Video Camera. CS mount. Focal length: 18-55 mm. Aperture: f/1.2-1.9. Diagonal angle of view: 113-48 degrees. Focus adjustment: manual, various-focal. Closest focusing distance: 1 cm. Dimensions: 43 x 55 mm.