I have this Schneider Symmar 300/500 shutterless convertible lens that I use with my Anniversary Graphic, which seems to cover the entire 14″x36″ frame when used as a 500mm lens. The edges are a little soft, but, acceptable. I’m assuming that this works because the image circle has doubled to around 1000mm due to bellows extension. I really don’t care how it works, very happy to have a wide angle.