Yesterday I was on a seminar about web trends and took some photos. The light in the room wasn't good enough to take photos without using a flash. Still, I took some test-shots before I turned my flash on and the result was not satisfying at all. In fact, some of the photos was so bad you couldn't see what was on them. Fortunately I had my external flash with me and was able to take some really nice shots on this day. But, imagine you just had one shot and no flash this time and your photo turned into blackness...