| 摘要 |
<p>A camera is used in combination with a photographic flash device and a delay mechanism for controlling the time when the camera shutter will open. A flash device on a camera generates a preliminary flash in synchronism with the depression of the camera's body release to induce the eyes of the subject to blink. A delay period is also initiated in the camera's controls to delay opening of the shutter. The duration of this delay is such that an exposure is not likely to be made until the refractory period after the evoked involuntary blink has been completed. At the end of this delay period, the shutter is allowed to open and a second flash may be generated to provide supplementary illumination. The camera may be an auto-ranging camera wherein camera-to-subject distance is determined electronically prior to opening of the shutter by sensing light from the preliminary flash, which has been reflected by the subject back to a sensor in the camera.</p> |
