2 Mega-pixel PoE Plus Speed Dome IP Camera
ICA-E6260
95
sufficient and no adjustment is needed. Some options will only appear under certain
Exposure/White balance modes. Each mode is described in details below.
Exposure Mode -Auto
In Auto Exposure Mode, you control the image brightness by configuring the AE Reference
Target and Slowest Auto Shutter.
AE Reference Target
(Auto Exposure reference target) can be considered as the “Target
Brightnes
s on Sensor”. The camera will use several internal parameters to achieve best
quality with reference to this.
The higher this value, the brighter the overall scene,
however, there may be more noise at night in such case.
The range of AE Reference
Target is 1~255.
The camera will automatically control shutter speed, auto iris (if available) and signal gain to
achieve the target level set by the user. If the auto iris does not exist or is already opened to a
maximum size, and the image is still darker than the user defined target, it will further slow
down the shutter speed within the allowed range (set by user under Slowest Auto Shutter
Speed) and increase the signal gain.
Slowest Auto Shutter Speed
is the user defined threshold for slowest allowed speed of
auto shutter. For example, if by default the shutter speed would vary between 1/5s ~ 1/2000s
depending on the lighting conditions, then setting the Slowest Auto Shutter Speed to 1/30s
would narrow down the auto shutter range to work between 1/30s ~ 1/2000s. The purpose of
allowing user to define the threshold for slowest speed is to avoid motion blur caused by too
slow shutter at night.
It is also important to know that very high shutter speed is not recommended for indoor
solutions with artificial light that flashes with certain frequency, as it may produce flickering
effect, regardless of Exposure mode.