As for film cameras there were very few commercially made stereo cameras after 1971 other than the multi image lenticulars there were some cameras with built in beam splitters and a few macro cameras for ultra closeups The high quality stereo film cameras were mostly regular cameras stitched together The one notable exception was the Horseman which featured a tiny 28 mm baseline and cost 5000 at least 4500 more than it was worth It was actually a reworked version of a mono camera that had been discontinued despite the false marketing claims that it was designed for stereo from the ground up It was 7P format but the built in stereo window meant that subjects closer than 5 feet for which its baseline was best suited would need cropping down to 5P to properly adjust the stereo window It was also designed to use slide film at a time that slide film had almost completely disappeared in regular retail outlets such as target being available almost exclusively at camera stores and through mail order