To function as such I have to write much, the adapter provides A-mount lenses to E or EF cameras. So far nothing unusual you might think. In detail, the function is but very ausgefuchst nd works really well. I have over 25 Minolta lenses and even some extra from Tamron and Sony, I have until now, still none found that is not working. In addition here, the Amazon price is really sensational. Absolute buy recommendation.