Board Lens                             

Specification	Lens 2.1、2.5、2.8、2.9、3.6、4、6、8、12、16
Focal length	2.1mm~16mm
Relative aperture	2
M.O.D.	0.3m
Object area at M.O.D.	Back focal length
Iris system	Galvano type(Fixed)
Sensitivity adjustment	None
Focus	Manual
Zoom	Manual