Hi everyone I have a sony a 500 and looking to get a minolta 50mm f1.7 AF lens, I found several on ebay but there seems to be several variations. I understand there are some that won't mount unless an adapter is present, I don't want to get that one. Does anyone know how to tell the difference? For example, I found this Minolta Maxxum AF Lens 50mm 1:1.7 AF50 - eBay (item 160398554562 end time Feb-01-10 18:16:12 PST) which I think is not mountable without an adapter. Then there's this: MINOLTA MAXXUM AF 50mm 1.7 for SONY ALPHA MINOLTA - eBay (item 190367447182 end time Jan-30-10 18:02:41 PST) Which obviously says iis for Sony - is there a difference between the two items, and if so how do you know?