.:LENS SIZE AND VIEWING ANGLE TABLE:.

-The following table is an approximate calculation of the viewing angle obtained based on the size of the lens. Depending on the application, use the chart to assist you in determining the size of lens needed.-

Focal Length (mm)	Aperture (F)	Image Format (inch)	Max. View Angle (Degree)
2.5	2.0	1/3"	100
2.8	2.0	1/3"	95
3.6	2.2	1/3"	82.5
4	2.2	1/3"	79
4.3	2.2	1/3"	70
6	2.4	1/3"	55
8	2.0	1/3"	35
12	5.0	1/3"	21
16	5.0	1/3"	19