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FOV Calcs

Camera Field Of View (FOV) calculations

When flying a camera over an area, a typical question is how many pixels per unit area will the camera see.  Typically, the cameras are flow at the widest angle settings.  The pixels per unit area that you require depend on the type of data you require.  For instance, calculating a overall biomass for a field can be done with relatively few pixels while trying to spot specific plant problems requires much higher pixel density.

Below are calculations for some Canon point and shoot cameras.

 

 

 

Camera ELPH 300 Elph 110 Canon SX260
Lens Equiv 24-120mm 24-120mm 25-500mm
effective Megapixels 12,100,000 16,100,000 12,100,000
Sensor   1/2.3 inch  
Horizontal Pixels 4,000 4,608 4,000
Vertical Pixels 3,000 3,456 3,000
Wide FOV Horiz Degrees 73.70 73.70 71.50
Wide FOV Vert Degrees 53.10 53.10 51.30
Wide FOV Diag Degrees 84.10 84.10 81.70
       
1000m FOV Horiz Meters 1,500.00 1,500.00 1,440.00
1000m FOV Vert Meters 1,000.00 1,000.00 960.00
Area Meters 1,500,000.00 1,500,000.00 1,382,400.00
Pixels per Meter^2 8.07 10.73 8.75
       
100m FOV Horiz Meters 150.00 150.00 144.00
100m FOV Vert Meters 100.00 100.00 96.00
Area Meters 15,000.00 15,000.00 13,824.00
Pixels per Meter^2 806.67 1,073.33 875.29
Pixels per Cent^2 0.08 0.11 0.09
       
10m FOV Horiz Meters 15.00 15.00 14.40
10m FOV Vert Meters 10.00 10.00 9.60
Area Meters 150.00 150.00 138.24
Pixels per Meter^2 80,666.67 107,333.33 87,528.94
Pixels per Cent^2 8.07 10.73 8.75
       
50m FOV Horiz Meters 75.00 75.00 72.00
50m FOV Vert Meters 50.00 50.00 48.00
Area Meters 3,750.00 3,750.00 3,456.00
Pixels per Meter^2 3,226.67 4,293.33 3,501.16
Pixels per Cent^2 0.32 0.43 0.35
       
25m FOV Horiz Meters 37.50 37.50 36.00
25m FOV Vert Meters 25.00 25.00 24.00
Area Meters 937.50 937.50 864.00
Pixels per Meter^2 12,906.67 17,173.33 14,004.63
Pixels per Cent^2 1.29 1.72 1.40
       
30m FOV Horiz Meters 45.00 45.00 43.20
30m FOV Vert Meters 30.00 30.00 28.80
Area Meters 1,350.00 1,350.00 1,244.16
Pixels per Meter^2 8,962.96 11,925.93 9,725.44
Pixels per Cent^2 0.90 1.19 0.97
       
28m FOV Horiz Meters 41.00 41.00 40.32
28m FOV Vert Meters 28.00 28.00 26.88
Area Meters 1,148.00 1,148.00 1,083.80
Pixels per Meter^2 10,540.07 14,024.39 11,164.40
Pixels per Cent^2 1.05 1.40 1.12
       
32m FOV Horiz Meters 46.50 47.00 46.80
32m FOV Vert Meters 31.00 32.00 30.72
Area Meters 1,441.50 1,504.00 1,437.70
Pixels per Meter^2 8,394.03 10,704.79 8,416.24
Pixels per Cent^2 0.84 1.07 0.84
       
       
32 meters = 105 feet