Alc (Auto Level Control) - Hitachi HV-D25 Operation Manual

In combination of GAIN:AGC, SHUTTER:AES and AUTO IRIS, the following four kinds of ALC (auto level
control) can be performed. This feature ensures stable video signal output according to a wide-range
change in illumination.
Note
1 AES cannot be combined with a Video type lens.
2 When not using an auto iris lens, at the Lens menu, set Lens Type to DC and Iris Mode to Manual.
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