I know that the iPhone doesn't have the greatest built-in camera but I am unable to brighten photos before snapping. Most of my photos are backlit and since the 3GS has no flash, these photos must get deleted. Even my ancient Razr phone camera has the ability to brighten photos which are too dark. Maybe the iPhone camera does have a way to brighten photos that I am unaware of. Please help. I can't always get the subject in bright light.