Dirty lenses on delivery, otherwise okay.

I use the adapter on a Sony Alpha 37 with a Minolta MD 50mm 1: 1.4 by an X700. Installation is no problem and she sees image quality after the first few shots quite ok, but it's also just the evening and I'm in it with relatively poor lighting. Incidentally, it should be clear that the an adapter changes the focal length. From my 50mm were 60mm.

One thing though: I have to say, out of the box I was first very disappointed, because the built-in lenses were smudged completely dirty or fingerprints. When cleaning nor a hammer, the fingerprints were also between the two lenses - I could see the brand new adapter so first disassemble to clean it. What sort of people and in which the garage things are as assembled?
Something goes not at all!

That is why, unfortunately, only 3 stars.