Flash Sync Flash sync, also known as flash synchronization, refers to the coordination of a camera's shutter speed with the firing of an external flash unit to ensure proper exposure and synchronization of flash and ambient light. Flash sync is important for preventing motion blur and achieving consistent lighting in flash photography, particularly when using high-speed flash units or capturing fast-moving subjects. Different cameras have specific flash sync speeds, typically ranging from 1/60 to 1/250 of a second, which represent the maximum shutter speed at which the entire image sensor is exposed while the flash fires. |