QUALITY
From the quality 1A, no burrs, etc., the adapter is well milled. It is made entirely of aluminum. On the camera adapter is (for me at least) without significant play, similar to a normal lens. I was similar to the test photos no lateral light notice. The adapter is inside completely black.
NOTE:
Use the included Allen wrench to loosen the alignment ring Normally not. A normal lens with T2 thread, you can easily attach so. The set screws must be loosened only to adjust the focal plane, which was in my case, but not necessary. If in doubt, you can hereby adjust everything.