In this tutorial, we learn how to use AV mode & High Speed Sync (flash). First, go to AV mode and change the settings to 2.8. When you do this, your shutter speed will blink at 250. To fix this, hit the lightning bolt with the "h" and change it to the high speed setting. Now, your camera will be able to use the high speed shutter with the flash as well. Now, take some shots of your subject in the sun and you should be able to see a huge difference. The background should come in crystal clear and so should the subject.