Once intrigued...
Once intrigued...
Tons of them....
I was intrigued in this direction at one time. I discovered the web site:
http://www.subclub.org/shop/halframe.htm
I was drawn to some of the more capable Canon Demi's, and some models made for Bell & Howell.
There are even some very interesting FSU sub-frame cameras.
Check the site out.
I had a few in various manufacturers, and the most contemporary Autofocus half frame I actually owned and used a lot was the Yashica Samurai 3.0. The majority of half or sub frame cameras used the standard 35mm cassette, and shot 2 images to a frame.
There was a full frame Konica camera, that had a switch on top to make it half frame. SLR using SLR lenses. It was the Konica Auto-Reflex. Note the hypenated Auto-Reflex, as this was the beginning of an extended line of Autoreflex models. Only the first (hyphenated) model could be switched over to 18x24 frame spacing. This model shows up just occasionally on eBay. It has no further model designation than Auto-Reflex. Use the very high quality Konica Hexanon lenses.
Leica also made a half frame camera.
Don't overlook the 110 format, which was in fact nearly the exact size of half frame. Film and processing was still available last time I looked and I had a lot of fun with the diminutive Pentax Auto110 which was and actual SLR with a nice range of fixed aperture lenses. You could carry a complete Pentax Auto110, camera, power winder, flash, 3-5 lenses, caps, and filters in a custom case for a going price now of $75 to $150. the case was about 12x15x3 inches. See them often on eBay.