Dec 3, 2014, 20:45
I have an Asahi bellows from my Vietnam/Navy days and use it with my Canon bodies. Google Pentax to Canon or M42 to Canon adaptors and can get one pretty reasonably. Since you won't be able use auto focus or any lens features you don't need to worry about whether it has the lens contacts so you can buy the lower priced ones. Works great and the same adapter that will mount the Asahi bellows will mount the Pentax M42 screw type lenses.
Fred
Fred