I ended up going with the Viltrox EF-M2II with a M42- EF adapter in front of it but I'm having real trouble getting it to work with my helios 44-2?
It doesn't focus any further than 30cm and won't go to infinity, so it is like it is a telephoto lens. I should be able to focus further than that right?
@heart0less you touched on something about infinity focus in your reference images, is this something you know anything about? Any help would be great