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Camera with control to prevent pre-flash light emission for reducing red- eye effect, when camera-to-subject distance beyond range of pre-flash light emission
Camera with control to prevent pre-flash light emission for reducing red- eye effect, when camera-to-subject distance beyond range of pre-flash light emission
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机译:当照相机到被摄体的距离超出预闪发光范围时,可控制照相机以防止预闪发光以减轻红眼现象
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摘要
A camera comprising an electronic flash unit capable of providing a pre-flash light emission for reducing a common phenomenon known as the red-eye effect and a main flash light emission for illuminating a subject during a flash assisted exposure, and a control connected to the electronic flash unit for making a judgement based on the subject brightness and the camera-to-subject distance to cause the electronic flash unit to omit the pre-flash light emission when a flash assisted exposure is to be made, is characterized in that the control is adapted to cause the electronic flash unit to omit the pre-flash light emission when the subject brightness is low enough for the red-eye effect to occur, but the camera-to-subject distance is greater than a maximum distance beyond which the pre-flash light emission is inadequate to reduce the red- eye effect.
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