EWA Marine UBZ
I got a chance to try out the EWA Marine underwater housing with the 7D last weekend. It was a shoot for a holiday window display for Velocity Filmworks. The underwater housing is as simple as it gets. The housing is a bag with a metal clip at the top with three tie down screws. The lens port will accommodate most zoom lenses. It comes with a 77mm screw in metal step up ring with a rubber gasket to keep the lens in place. The gasket comes off easily so it must be re-adjusted constantly.