I took my old Minolta SRT 102. I've got a few lens', all the old MC, nice glass. I'm looking to buy a 135 f2.8 MD, how do I tell if it's the MDl or MDll, and are they the 4/4 setup? I've looked on line and could not find much on how to tell the difference except perhaps the thread size 55mm, 49mm. Sent it out a while ago so now I can use the modern battery. Happy Thanks Giving, John