Model	OPT-COB5028
Focal Length(mm)	50
Back Focal Length(mm)	18.11 at WD250 | 18.11 at WD2000
Working Distance(mm)	250-2000
Aperture(F/#)	F2.8-F22
Magnification（X）	0.222X at WD250
Coaxial	No
Image Circle Ø(mm)	9
Sensor Format	1/1.8"
TV Distortion(%)	＜0.01% at WD300
Mount	C-Mount
Filter Thread	M27×0.5-6H
Image Resolution(μm)	2.2