Hitachi VM-1600A 用户手册

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页码 93
EXPOSURE CORRECTION 
 
41
EXPOSURE CORRECTION 
This camera/recorder is provided with an auto iris mechanism which automatically 
adjusts the lens aperature in accordance with the available light. When the object is 
dark, the iris opens automatically, and it closes when the object is bright. When the 
power is switched off, the iris is automatically set to the fully closed position. 
When the background is brightly lit and the subject appears too dark, press and hold 
down "BACKLIGHT" button during recording. While "BACKLIGHT" button is depressed, 
you can correct the back light.