speters wrote:
If you shoot in manual, all you need, is to set the lens to the required aperture, than that's it! Aperture set, simple!
That's what gives you the desired DOF. No need to set anything on/in the camera for that, with an M42 adapter, you do not have the communication between the lens and camera! You can see the working aperture in the viewfinder, or if you want in live view!
I am not sure about communication. I am able to meter OK. Then according to you, the lens ring does it all. But what about camera setting? Isn't there a conflict here?