Focal Length of Lens 1/3" Imaging Sensor 1/4" Imaging Sensor 2.8mm 82° 65° 3.7mm 65° 53° 4mm 62° 50° 4.8mm 53° 42° 6mm 44° 34° 8mm 34° 27° 12mm 23° 18° 16mm 17° 13° 25mm 11° 9° 50mm 5° 4° 75mm 3° 2.5°     Car is approximately 40 metres away, shown here at different focal lengths: View at 5 mm focal length View at 25 mm focal length View at 50 mm focal length A 65 degree camera angle will give the following view in a square room

CCD Sensors are Generally 1/3 Inch, with exceptions. Please check for accurate results.
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