Thanks for the input people, it is appreciated.
I should have said this is about my NEX 7 adventures with legacy lenses.
I'm on a pretty tight budget and was hoping to hear that price really didn't make much difference. I don't think it will, with my shooting anyways.
I've got a cheapie LTM to NEX one off ebay that seems to work just fine. I also got a little higher priced one with my camera, a Pro Optic M to NEX, but I haven't tried using it yet.
As an ex-machinist I can't imagine that any of them out there are not machined within a fairly close tolerance to nominal, what with CNC machining such as it is in today's high volume markets. I'm still waiting on my Nikon to NEX adapter which is on back order, but I'm sure I'll be happy with it too.
I will plead ignorance here though.
Why is infinity focusing so important and how do I check it accurately?