Strangest camera in my collection is probably a 5x7 pinhole I designed and 3D printed with a fixed 150mm focal length. I had this idea that I could use paper negatives to get high contrast, and then make salt prints and whatnot from those negatives. Turned out to be a failed experiment. The camera worked and made some pretty cool paper negatives, but printing alt processes through a paper negative makes exposure times unacceptably long, and it turns out it's not just contrast those processes want, it's density and dynamic range![]()
It would be dandy with xray film, though.