Model	OPT-C1218-5M
Focal Length(mm)	12
Back Focal Length(mm)	13.39
Working Distance(mm)	100~∞
Aperture(F/#)	F1.8~F16
Coaxial	No
Image Circle Ø(mm)	11（2/3″）
Sensor Format	1/3" | 1/2.5" | 1/1.8" | 2/3"
Distortion	<0.25%
Max. Field Of View（H*V）	23.0°×17.3° | 27.4°×20.7° | 34.1°×25.8° | 40.1°×33.9°
Flange Focal Distance(mm)	17.526
Mount	C-Mount
Filter Thread	M30.5×0.5-6H