This video instructs the watcher on how to use the flash of a Vivitar to add light to photos taken outside if a little extra light is needed. Turn the camera on AV mode, choose an ISO setting like 100 or 200, then take a reading, either off the sky or an object. Then use the Vivitar to match up to that setting. Then position your camera off to the side to add a directional light to give the photo detail and kick. Follow the directions in this video to learn a new technique to give your outdoor photos an extra kick on an overcast day.