My flash is slightly older. I got it as a present for Christmas one year. It was a nice gift and I have used it since, but never really looked into it or studied it. Now I'm looking to get a diffuser or bouncer, I've noticed it has grooves over the lens, top and bottom, so that it can receive a filter or some sort of insert slid in from the side. The problem is I have googled my heart out and cannot find what inserts were meant to go there! Anybody have any? Know where I might find them? What is the general purpose? I was hoping that I might get a diffuser insert rather than using a sock-type cloth diffuser over the top. EDIT: Here's a picture from google: /EDIT P.S. Are there any flash tutorials or articles about setting up bounces and/or diffusers?