Flash synchronization, or flash sync, is the process of coordinating a camera's shutter speed with the timing of a flash to ensure that the entire image is evenly illuminated when the flash fires. When the flash is triggered, the camera's shutter must be fully open to capture the light from the flash. Flash synchronization settings help avoid issues like partial exposure or dark bands across the image, which can occur if the shutter and flash are not properly aligned. Proper synchronization is crucial for achieving clear and well-lit photographs, especially in low-light conditions.

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