Vivotek IZ7151 User Manual download pdf (Page 44)

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44 - User's Manual

Exposure :

■

Auto

The Network Camera automatically adjusts the iris and gain, but fixed shutter speed (1/30 s)

in response to different environment� The exposure setting defaults to Auto and works well in

most situations� Depending on ambient lighting conditions, select either to turn on the back light

compensation or not; this feature is only accessible in auto exposure mode�

■

Shutter Priority

Select this option to adjust the desired shutter speed and allow the Network Camera to select

an appropriate iris and gain to obtain the correct exposure� Adjust the shutter speed in sixteen

steps from 1/2 second (slowest) ~ 1/10000 second (fastest)�

■

Iris Priority

Select this option to adjust the desired iris and allow the Network Camera to select an

appropriate shutter speed and gain to obtain the correct exposure� Adjust the iris in seventeen

steps from F1�4 (largest size of lens aperture opening) ~ F22 (smallest size of lens aperture

opening)�

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Manual

Select this option to adjust the desired shutter speed, iris and gain� Adjust the shutter speeds in

eleven steps from 1/60 second (slowest) ~ 1/10000 second (fastest); the iris in seventeen steps

from F1�4 (largest size of lens aperture opening) ~ F22 (smallest size of lens aperture opening)

and the gain in fifteen steps from 0db (lowest noise level) ~ 28db (highest noise level)�

Day/Night :

■

Auto

The Network Camera automatically switches between day mode and night mode by judging the

level of ambient light� This mode is accessible only when the exposure mode is set to Auto�

■

Day mode

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Vivotek IZ7151 User Manual Page 44