Vivotek NETWORK CAMERA IZ7151 - Manual (Page 81)

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User's Manual - 
shutterpriority 0~15 4/4
Indicate exposure time when choosing shutter priority in
“exposurecontrol”
0 => 1/2
1 => 1/4
2 => 1/8
3 => 1/15
4 => 1/30
5 => 1/60
6 => 1/90
7 => 1/125
8 => 1/250
9 => 1/500
10 => 1/725
11 => 1/1000
12 => 1/2000
13 => 1/4000
14 => 1/6000
15 => 1/10000
shutterspeed 0~10 4/4
Indicate exposure time when choosing manual mode in
“exposurecontrol”
0 => 1/60
1=> 1/90
2 => 1/125
3 => 1/250
4 => 1/500
5 => 1/725
6 => 1/1000
7 => 1/2000
8 => 1/4000
9 => 1/6000
10 => 1/10000
irispriority 0~16 4/4
Indicate iris diaphragm when choosing iris priority in
“exposurecontrol”
16 => F1.4
15 => F1.6
14 => F2.0
13 => F2.4
12 => F2.8
11 => F3.4
10 => F4.0
9 => F4.8
8 => F5.6
7 => F6.8
6 => F8.0
5 => F9.6
4 => F11
3 => F14
2 => F16
1 => F19
0 => F22