I once owned a Technika 70 with Super Rollex 6x7 back and four lenses with cams. It was in incredible system! Very hand-holdable, but even better with a monopod. It had parallax-compensating framelines for all the lenses in the viewfinder, an excellent rangefinder, front and back movements, long bellows extension, and even a built-in selenium meter! What more could you ask for? OK, so it was heavy. But the negatives it made were incredible. The vertical orientation made it a great portrait camera, and I even shot a wedding with it once.