Field of View Chart for Lens Selection Using 1/3" Format Cameras
The reference guide below will help assist you in designing a system that will meet the requirements for any end-use application
	Distance from Camera (Width X Height)
Size of Lens	5 feet	10 feet	25 feet	50 feet	100 feet
2.8mm	8.5' X 6.5'	17' X 12'	43' X 32'	86' X 64.25'	171.5' X 128.5'
3.5mm	7' X 5'	13.75' X 10.25'	34.25' X 25.75'	68.5' X 51.5'	137' X 103'
4mm	6' X 4.5'	12' X 9'	30' X 22.5'	60' X 45'	120' X 90'
6mm	4' X 3'	8' X 6'	20' X 15'	40' X 30'	80' X 60'
8mm	3' X 2.25'	6' X 4.5'	15' X 11.25'	30' X 22.5'	64' X 45
12mm	2' X 1.5	4' X 3'	10' X 7.5'	20' X 15'	40' X 30'
16mm	1.5' X 1.25'	3' X 2.25'	7.5' X 5.5'	15' X 11.25'	30' X 22.5'
25mm	11" X 9"	1.75' X 1.25'	4.75' X 3.5'	9.5' X 7.25'	19' X 14.5'
50mm	6" X 4"	11" X 9"	2.25' X 1.75'	4.75' X 3.5'	9.5' X 3.5'
75mm	4" X 3"	8" X 6"	1.5' X 1.25'	3.25' X 2.5'	6.5' X 4.75
Differences in manufacturing of cameras and lenses between manufacturers will create differences in field of views from the above chart.
The chart is provided as a tool to assist in the proper selection of lenses.