Quote Originally Posted by Shelley View Post
Sorry Mark - the link is here and its presented by B&H

http://www.youtube.com/watch?v=hk7IR...ature=youtu.be
Off topic, but here's another of Syl's presentations I found interesting http://www.youtube.com/watch?v=Ojzbf...feature=relmfu.. I think this was from the same day as his multiple flashes talk.