Photon Focus CameraLink MV1-D1312 series User Manual page 28

4 Functionality
LinLog2
To get more grey resolution in the LinLog
LinLog2 mode a switching between two different logarithmic compressions occurs during the
exposure time (see Fig. 4.10). The exposure starts with strong compression with a high
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LinLog voltage (Value1). At Time1 the LinLog
a weaker compression. This procedure gives a LinLog
resolution. Fig. 4.11 and Fig. 4.12 show how the response curve is controlled by the three
parameters Value1, Value2 and the LinLog
Settings in LinLog2 mode, enable a fine tuning of the slope in the logarithmic
region.
V
L i n L o g
V a l u e 1
V a l u e 2
Figure 4.10: Voltage switching in the Linlog2 mode
300
250
200
150
100
50
0
Figure 4.11: Response curve for different LinLog settings in LinLog2 mode
26
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time Time1.
T i m e 1
0
Typical LinLog2 Response Curve − Varying Parameter Time1
Time2=1000, Value1=19, Value2=14
Illumination Intensity
mode, the LinLog2 procedure was developed. In
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voltage is switched to a lower voltage resulting in
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response curve with more grey
t
e x p
T i m e 1
t t
T i m e 2 = m a x .
= 1 0 0 0
T1 = 840
T1 = 920
T1 = 960
T1 = 980
T1 = 999