I heard someone say once when asked if they use available light or flash, "i use both, whatever is available". In my opinion, 90% of the time when shooting a portrait, you need flash. Even if its just to pop the eyes and you let ambient light do most of the heavy lifting, you still really need it. The photo above did not need flash. It honestly was one of those fluke shots that i was not required to shoot but when you see a background like this and light hitting a subject like this, you need to shoot it. Thanks to my subject for letting me post it to my blog.