Not many SLR's were made for the 126 "Instamatic" format. I think Rollei made one. I recently acquired this leaf shutter Ricoh TLS 126 C-Flex in non working condition. It's a quirky camera in a number of ways. The lenses are interchangeable, but with a one-off lens mount with a small screw thread. Presumably different lenses were available. Aperture is set on a wheel on the front of the body, whilst shutter speed is set via a ring on the lens throat – the reverse of the usual arrangement. There is an A setting on the aperture dial, apparently giving shutter priority auto exposure. Opening the back reveals the compartment for the 15V battery which powers the flashcube, and for a single cell feeding the exposure metering. The 126 cartridge (if I had one) would be upside down because of the direction of travel. The square focusing screen is a little odd. The focusing surface is a ring near the centre, whilst the areas inside and outside the ring are not ground, so the image in these areas always appears sharp - easy to forger to focus, Mine does not seem to want to work, all the speeds sound the same, and there's no 126 film anymore so I'm afraid it will remain a shelf queen. Thank you for looking (3 pictures follow).