I bought a few weeks before me this adapter. Had now unfortunately find that he is not light-tight. It takes light in the release button (approximately 4 cm in length), between the black anodized aluminum body and the silver connection ring into the interior one. With long exposures completely useless! Also sit the lenses slightly twisted to the left. Who seriously wants to take pictures with adapted lenses attacks better to another product. Greeting, Thorsten Spielmann
