Took three lenses out last weekend. Wanted to test them all on the Sony Nex-5N. Very impressed with them all. I could have one lens that is decentered, but only at one or two aperture settings. Must test them again to make sure. I wasn't sure how they would perform on the larger senson in the Nex-5N. I think I was worrying for nothing, they all performed admirably. This is one from the Voigtlaender 75 f2.5. One of the best lenses I've ever had.