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ES ON: The camera continuously adjusts the shutter speed from 1/60 (NTSC), 1/50 (PAL) second
to 1/100,000 second according to the luminance conditions of the scene.
ES OFF: The shutter speed is fixed at 1/60 (NTSC),1/50 (PAL) second.
Set ES OFF, when auto iris lens is used or flicker is observed under a very bright fluorescent lamp.
Otherwise, turn ES on for optimum performance.