Early photographic synchronization system and method

摘要

A system and method for synchronizing a photographic lighting device to image acquisition by a camera such that initiation of light emission of the photographic lighting device occurs after the first shutter blade of the camera begins to expose an image acquisition sensor of the camera to light and before X-sync associated with the first shutter blade stopping movement.

主权项

1. A method for synchronizing a photographic lighting device to image acquisition by a camera, the method comprising:
detecting a predictor signal and/or event; determining an amount of time from the occurrence of the predictor signal and/or event until a desired time for the initiation of light emission of the photographic lighting device; transmitting to the photographic lighting device an instruction for the initiating light emission of the photographic lighting device at the desired time; allowing a first shutter blade of the camera to move such that light is allowed to pass to an imaging portion of an image acquisition sensor of the camera; and initiating light emission of the photographic lighting device, using the instruction, after the first shutter blade begins to expose the image acquisition sensor to light and before X-sync associated with the first shutter blade stopping movement, where said determining an amount of time includes utilization of time value determined using a calibration that includes:
initiating an image acquisition sequence;determining a start of movement of a second shutter blade; andusing a shutter speed of the image acquisition, a shutter blade travel time for the camera, and a time from the occurrence of the predictor signal and/or event to the start of movement of the second shutter blade to determine the time from the predictor signal and/or event to the stopping of movement of the first shutter blade.