CR4000x2
Full Sensor Resolution
The required focal length of the lens at full sensor resolution (2304 x 1720
Pixel) is calculated as follows:
126
,
20
1
]
[
B
A
mm
Length
Focal
+
=
A: Distance from lens to object in mm
B: Size of the object in mm
Object Size
Example:
A: Distance from lens to object = 300 mm
B: Object Size = 100 mm
calculated focal length = (300 : (1 + (100 : 20,126))) = 50 mm
selected focal length = 50 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
007
,
0
]
[
D
C
mm
Size
Sensor
+
⋅
=
CR Series
Ref. 1830-SU-02-G
Page 49