Patent ID: 7847859
Filing Date: 2010-12-07
Classification: G03B

Abstract:
1. An exposure control method for a sensitivity changeable imaging apparatus with a flash device, comprising steps of: measuring subject brightness from a photometry area of a scene to shoot; calculating based on the measured subject brightness a proper exposure value at a predetermined standard imaging sensitivity; deciding based on the calculated proper exposure value at least a shutter speed and an imaging sensitivity; and comparing the calculated proper exposure value with a predetermined threshold exposure value, to decide that said flash device is to emit a flash light when the calculated proper exposure value is lower than the predetermined threshold exposure value, wherein said step of deciding the shutter speed and the imaging sensitivity based on the proper exposure value comprises steps of: comparing the decided shutter speed with a predetermined hand-shake warning threshold value; and changing the imaging sensitivity to a value higher than the standard sensitivity and the shutter speed to a predetermined hand-shake limit shutter speed or a value higher than the hand-shake limit shutter speed, when the decided shutter speed is slower than the hand-shake warning threshold value.