As I stated, it was the adapter i was wondering about and not the lens. The lens is indeed made for the old OM serie, and would fit the OM 1 all the way to the OM 10.
If I could afford it I would buy the equipment that was needed to do the job. My lack in knowledge about how this works in a "normal" camera, or how it does not work was why i came here to ask these questions. I am grateful that all of you took your time to answer, and trying to explain it all to me. When thats said, you do not need the infinity focus when doing creative closeups, portraits or shots where your close to your subject.
It`s my fault, and that i apologize for. I should have used more time elaborate my needs and uses.
Again, thank you som much for all the good answers.