Hey Guys!
I have an offer to buy two m Summicrons, at around $300 each. Haven't checked the condition yet, but the price seems very good either way. and it is legit, since it's from a well known photography store. I was planning to use it on my Sony A7, as my main all day use. But since you guys have all the knowledge about everything here, what versions should I look out for, regarding good-er and bad-er versions etc?