It looks close to what it would need to be to fit on a camera like the Polaroid MP-4 I have. With that camera, you can set the lens to make reductions -- easily down to 35mm half-frame size. It has a sliding camera mount attachment, so you could have this thing attached (assuming that mounting plate is correct), focus, slide the camera into position, pull the dark slide, fire the shutter (lens is mounted in a shutter). It'd actually be very convenient for it.