Hitachi VM-1700A - Manual (Page 37)

PROGRAM AE (Auto Exposure)
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PROGRAM AE (Auto Exposure)
Program AE automatically selects the shutter speed 1/60, 1/100, 1/120, 1/180, 1/250,
1/350, 1/500, 1/750, 1/1000, 1/1500, 1/2000, or 1/4000 second that is optimum for the
brightness of the subject. The iris is also adjusted automatically in response to the
shutter speed.