Anybody ever use these? We rented 5 of them to project stained glass windows. Lets just say, they aren't worth the money. There two significant problems with them. The first is since the image goes into the iris slot of a Source Four, there is almost no way to get the image clear. Much worse, the fixture must be nearly perpendicular to the surface which you're projecting on, or else there is no way to even remotely sharpen the entire image at once due to the ellipse shape. But i dunno, maybe others have had better luck with them.