CP90-25P-M/C-72
Ref. 1896-SU-01-D
Page 26
Focal Length Calculation
Full Sensor Resolution
The required focal length of the lens at full sensor resolution (5120x5120 Pixel)
is calculated as follows:
A: Distance from lens to object in mm
B: Size of the object in mm
Example:
A: Distance from lens to object = 300 mm
B: Object Size = 100 mm
calculated focal length = (300 : (1 + (100 : 32,583))) = 73,7 mm
Reduced Sensor Resolution
At reduced sensor resolutions (e.g. 1920 horizontal x 1080 vertical pixels) the
focal length is calculated as follows:
2
2
0045
,
0
]
[
D
C
mm
Size
Sensor
583
,
32
1
]
[
B
A
mm
Length
Focal
Object Size
