Greetings!!! I am a rookie when it comes to using an old manual lens with my EPL2. A friend gave me a Helios 44 lens that uses the M42 mount. I have a few questions: 1. Can you recommend an affordable lens adapter to purchase? I have tried to research, however, I don't understand whether aluminium or steel is better and how to assess which is the most compatible for the EPL2. 2. What are some of the basic tips when operating the EPL2 when using a manual lens? Thanks a lot for any tips or advice!