The Ricoh Caddy was Ricoh's most accomplished half frame camera ever. Not that they built so many, but they got it right pretty quick. It has full manual settings, a Tomioka lens and the ergonomics are truly excellent. And to boot, it fits in your jeans pocket. Although it should be treated with a bit more respect because of what it is and what it delivers!

While I truly enjoy my screw mount Leicas, it took me a long time to find their SLR counterpart. While essentially it really shouldn't have been that hard, once you think about it.

I know Leica built some truly terrific early Leicaflexes, but they are more related to the M series rangefinders than to the earlier screw mount cameras.

Same time,  the Russians copied the early Leica II and went on from there to produce a Single Lens Reflex camera. Enter the Zenit line of SLR cameras from the early 1960s! Incredible fun for petty cash!