People rave about using old glass on mirrorless cameras, but i've noticed the ebay prices can be vary widely from under £20 to over £200. Lens condition apart, is there a difference is performance? Minolta couldn't of made the best glass across all the range? Its like Nikon kit lens 18-55 v's f2.8 18-55. They look the same but are world apart in terms of performance. I've found a few website that has some information on the old lens, ratings etc but im lost as what to look for. Im ordering a A6000 at the end of the month, and I don't want to take a punt on a lens and it be a waste of money.