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2. Method of controlling quantity of light [ALC/ELC]The method of controlling the quantity of light is selected from the following in accordance with
the lens to be used.
ALC (default): Adjusts the iris of the lens in accordance with the brightness of a subject. This
selection is suitable for use of an auto iris lens (ALC lens).
ALC+: Controls the quantity of light with a combination of the electronic shutter and auto iris.
This selection is suitable at shooting a bright subject such as an outdoor subject with auto
iris lens. Be aware that flicker may occur when a subjectis under fluorescent lighting.
ELC:Fixes the iris of the lens to a set value. This selection is suitable for use of a lens with fixed
iris or manual iris.
Backlight compensation• If a subject has a bright light such as a spotlight in its background, the subject appears
shadowy because the camera adjusts the iris in accordance with the bright area.
• To eliminate this phenomenon, masking bright areas allows users to perform backlight
compensation to hide bright areas.
• Backlight compensation has two modes: One is the PRESET ON mode for automatic com-
pensation after sensing the light conditions on the camera side, the other is PRESET OFF
mode for specifying the sensing area manually.
Nighttime Nighttime
Daytime Daytime
[No backlight compensation performed] [Backlight compensation performed]