Electronic still camera
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United States of America Patent
Stats
-
Apr 16, 1991
Grant Date -
N/A
app pub date -
Aug 14, 1989
filing date -
Aug 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic still camera comprises a photoelectric converting device for converting light from an object into an electrical signal; an amplifying-recording device for amplifying the electrical signal and for recording the amplified signal on a recording medium; a selecting device for selecting one of plural amplification gains so that the amplifying-recording device amplifies the electrical signal on the basis of the selected amplification gain; an exposure time in accordance with the selected amplification gain and the luminance of an object to be photographed; and a determining device for determining a longest permissible exposure time, irrespective of the luminance of the object, in accordance with the selected amplification gain. If the calculated exposure time is longer than the longest permissible exposure time, an alarm is given and/or the calculated exposure time is reduced.
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