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1

No matter when the camera shutter is active, if the frequencies of the video vertical timing (the frame rate) and the laser pulse are not congruent, you'll see partial exposures as they drift apart. The solution is to trigger the laser pulse on every other vertical sync time. The details on extracting the vertical interval will depend on the camera, and how ...


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IME, 0.0036% is rather better than average. Consumer gear operates on quite inexpensive crystal oscillators. These oscillators or crystals are not tuned precisely (or they would cost too much), and they don't have extraordinary stability over temperature ranges. Professional gear uses special techniques to keep audio and video gear in synchronization. ...



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