In our photo challenge at jessiccasprague.com we are using a technique called slow sync flash. It's where you use a slow shutter speed...and the flash goes off toward the end of taking the photo. It gives some really cool background effect while keeping the main subject in focus. Here is a website with some neat examples. http://www.digital-photography-school.com/13-great-slow-sync-flash-images And here is my attempt at this earlier today in the late afternoon/early evening when the sun was going down. I am spinning as I am taking the picture.
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