Pellix camera have been around since the late 60's. First with a prism then with a mirror. They just do not send as much light to the film as the light is spite for the vf compare to a slr system
Super Frequent Flyer, no joke. Ex Patriot and loving it.
Canon Eos 60D, T1i/500D, Eos1, Eos 630, Olympus EPL-1, and a part time Pentax K-X shooter.