Exposure control with fixed time exposure at high light levels

Details Exposure control with fixed time exposure at high light levels Exposure control with fixed time exposure at high light levels

G - Physics

03

B

342/17.4, 95/53.

G03B 9/42 (2006.01) G03B 7/091 (2006.01)

Patent

CA 1326526

EXPOSURE CONTROL WITH FIXED TIME EXPOSURE AT HIGH LIGHT LEVELS ABSTRACT A camera having an automatio exposure system for providing decreasing aperture-interval values with increasing ambient light levels including an ambient light level sensor element for detecting an ambient light level equal to a predetermined high ambient light level and a control system for overriding the automatic exposure system in response to detection of said predetermined level for providing a fixed effective aperture and fixed exposure time interval corresponding to the aperture-interval value defined by the automatic exposure system at, the predetermined level whereby increased exposure is provided at light levels greater than the predetermined level to thereby provide a scene overexposure increasing with the amount of ambient light exceeding the predetermined level so as to provide acceptable exposure of a subject within that high light level scene.

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