Calculate Focal Length

To calculate the focal length, you need to:

• select the sensor
• enter the distance to the scene (in m or ft)
• enter the width OR the height of the scene (in m or ft)

1/4-inch Sensor
1/3-inch Sensor
1/2-inch Sensor
2/3-inch Sensor
1-inch Sensor
Distance (m or ft)
Size of Scene (m or ft)		Width		Height

		Width (m or ft)
Height (m or ft)			Distance to scene/object (m or ft)
			Focal length (mm)