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Sarix® Modular Camera Operations Manual
C6719M | 02/22
20
Note
: Disabling the night visibility check could delay the camera from transitioning
between night and day modes and make the transition time less optimal. For example,
the camera stays in night mode 30 minutes longer than it needs to.
6. To adjust the exposure of the image, adjust the Exposure Settings:
l Exposure: Click to select the appropriate exposure rate from the drop-down menu. Allow the
camera to control the exposure by selecting Automatic. In some cases, Automatic is the only
option available.
Note
:
Exposure
is only available when
Wide Dynamic Range
is disabled.
Note
: Increasing the manual exposure time might affect the image rate.
l Maximum Exposure: If you selected Automatic as the Exposure Offset, you can limit the
automatic exposure setting by selecting a maximum exposure level. The Maximum Exposure
drop-down menu is only available when the Exposure setting is set to Automatic.
By setting a maximum exposure level for low-light situations, you can control the camera's
exposure time to let in the maximum amount of light without creating blurry images.
l Priority: If you selected Automatic as the Exposure Offset, you can set Image Rate or
Exposure as the priority.
– When set to Image Rate, the camera will maintain the set image rate as the priority and
will not adjust the exposure beyond what can be recorded for the set image rate.
– When set to Exposure, the camera will maintain the exposure setting as the priority, and
will override the set image rate to achieve the best image possible.
l Backlight Compensation: If your scene has areas of intense light that cause the overall
image to be too dark, click to select the checkbox for Backlight Compensation, and then enter a
value (either by typing a number, or selecting one using the up and down arrows) that results in
a well-exposed image. See the section titled Understanding Backlight Compensation (BLC)
and Wide Dynamic Range (WDR).
l Maximum Gain: To limit the automatic gain setting, click to select the the appropriate
Maximum Gain from the drop-down menu.
By setting the maximum gain level for low-light situations, you can maximize the detail of an
image without creating excessive noise in the images.
7. Click Apply to save the settings.
Understanding Backlight Compensation (BLC) and Wide Dynamic Range (WDR)
l BLC is a feature that optimizes exposure in the foreground and background of security video. BLC
uses a single exposure time for the whole image, and uses auto exposure to ignore very bright
regions (or very dark, if set negative). You must choose whether the camera optimizes the
foreground or the background.
l WDR enables advanced image processing, and helps draw out detail from both very bright and dark
areas in a scene. For example:Use WDRin lobbies or store fronts with natural light streaming in
through windows, where you also have dark areas in the same scene. WDR takes multiple
exposures of the scene in a single time slice. Two scans are taken of each video frame, one with a
short exposure optimized for brighter portions of the scene, the other longer to draw out detail in dark
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