Hello guys, I'm Hiep, pretty much new to this forums. I just got my Leica Summicron 180/2 today, and already got my Elmarit 100 macro. However, I am not going to shoot with a Leica body. Instead, I am going to shoot these two on my Sony A900. There is perfectly reversible process to change the mount of a R lens to Alpha mount from Leitax.com. Or for a less risky option, you can always get a Canon 5D Mark II and a compatible adapter and you can readily shoot these gems on a digital back. As far as I know, Nikon would be able to use R lenses via Leitax conversion as well. So these are the three Full Frame options that you guys can migrate over to the digital world. I doubt that the very first R digital back from Leica would be a full frame. However, I got a rumor that Leica is planning to have a digital system that will use R lens. But a rumor is a rumor. For now, I'm going to enjoy shooting with my two Leica lenses. Best, Hiep