Hello! I'm thinking of equipping myself soon with some adapted lens. I am currently looking at some old Helios lenses, however I am having a few things that I am not sure about. I've read that some older lenses require a 'flanged' adapter. How can I be sure that the lens that I am buying require this? Also will a flanged adapter work well with a lens that does not require it and vice-versa ? I'm also looking at the more expensive alternative of buying an used OLYMPUS OM lens (the 50mm 1.8f looks good). Does the olympus system use flanged and non-flanged adapters as well ? I understand that this may be stupid questions, but I hope that I can find some answers. Thank you in advance!