LENS |
| The distance between the camera and the shooting target. We call this the viewing distance--A (1m=3.28ft ) |
| 5m (16.4ft) | 10m (32.8ft) | 15m (49.2ft) | 20m (65.6ft) | 30m (98.4ft) |
| 2.5mm lens | 
viewing width 15.5m ( 50.84ft ) | 
viewing width31m ( 101.68ft ) | 
viewing width46.5m (152.52 ft) | 
viewing width62m ( 203.36ft ) | 
viewing width93m ( 305.04ft ) |
| 2.8mm lens | 
viewing width13m ( 42.64ft ) | 
viewing width26m ( 85.28ft ) | 
viewing width9m ( 29.52ft ) | 
viewing width2m ( 6.56ft ) | 
viewing width78m ( 255.84ft ) |
| 3.6mm lens | 
viewing width8.5m ( 27.88ft ) | 
viewing width17m ( 55.76ft ) | 
viewing width25.5m ( 83.64ft ) | 
viewing width34m ( 111.52ft ) | 
viewing width51m ( 167.28ft ) |
| 4mm lens | 
viewing width8m ( 26.24ft ) | 
viewing width16m ( 52.48ft ) | 
viewing width24m ( 78.72ft ) | 
viewing width32m (104.96 ft ) | 
viewing width48m (157.44 ft ) |
| 6mm lens | 
viewing width5.5m ( 18.04ft ) | 
viewing width11m ( 36.08ft ) | 
viewing width16.5m ( 54.12ft ) | 
viewing width22m ( 72.16ft ) | 
viewing width33m ( 108.24ft ) |
| 8mm lens | 
viewing width3.5m ( 11.48ft ) | 
viewing width7m ( 22.96ft ) | 
viewing width10.5m ( 34.44ft ) | 
viewing width14m ( 45.92ft ) | 
viewing width21m ( 68.88ft ) |
| 12mm lens | 
viewing width2m ( 6.56ft ) | 
viewing width4m ( 13.12ft ) | 
viewing width6m ( 19.68ft ) | 
viewing width8m ( 26.24ft ) | 
viewing width12m ( 39.36ft ) |
| 16mm lens | 
viewing width1.5m ( 4.92ft ) | 
viewing width3m ( 9.84ft ) | 
viewing width4.5m ( 14.76ft ) | 
viewing width6m ( 19.68ft ) | 
viewing width9m ( 29.52ft ) |
| 30mm lens | 
viewing width1.25m ( 4.1ft ) | 
viewing width2.5m ( 8.2ft ) | 
viewing width3.75m ( 12.3ft ) | 
viewing width5m ( 16.4ft ) | 
viewing width7.5m ( 24.6ft ) |
| 60mm lens | 
viewing width0.5m ( 1.64ft ) | 
viewing width1m ( 3.28ft ) | 
viewing width1.5m ( 4.92ft ) | 
viewing width2m ( 6.56ft ) | 
viewing width3m ( 9.84ft ) |
