If the camera is set to the Full Auto mode or a Programmed Image Control mode, second-curtain synchronization cannot be used To obtain second-curtain synchronization effects, set the camera to the Tv, Av or M mode and use a slow shutter speed
after the flash fires if the correct flash exposure has bee obtained. If the flash confirmation lamp does not light after the flash fires, the picture may have been underexposed. Move closer to the subject and try again.
When the flash coverage changes, the Speedlites Guide No. also changes. If a lens wider than 24mm is used, the light will falloff at the picture's periphery Using any lens longer than 100mm light the 105mm flash coverage indicator
