Lens Angle Comparison

The following chart displays the comparison of CCTV lens with the regular 135mm film camera lens.

CCTV lens
135mm lens
focal length Angle Angle focal length    
2.5mm 120 114 14mm
3.6mm 92 94 20mm
4.3mm 78 75 28mm
6.0mm 53 51 45mm

Standard lens for 135mm camera Regular angle of our eyes vision

12mm 25 24 100mm
25mm 18 18 135mm

Canon-USA has a visual comparison chart of their lens.
Please visits them. It is fun to find out how wide is 120 or 18.

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