Australian Polaroid-to-4×5-rangefinder camera modifier Razzledog built a prototype 4×5 SLR! He says:
I have long had dreams of building a 4×5 SLR……so this prototype is currently under review. The advantages are finally the image is right side up, so I no longer have to stand on my head….. I don’t have to worry about any parallax issues so I get perfect framing without fear of any cropping……and interchangable lenses are no problem. It has bellows so awesome macro is also permissible…
Continue reading and check out photos at Razzledog’s site.