I have recently stumbled on by accident a Leica M to NEX adapter when I was browsing around eBay. I already own a Voigtlander made M to NEX adapter (I decided to purchase a more expensive brand, but since I will be using it all the time I decided to invest on one that will last me a very long time) but what caught my eye was the helicoid design of the adapter that lets you focus closer than the len's minimum focusing distance (MFD). I did some research on this and I found out that this seller actually hand makes each and everyone of these adapters in total precision in limited batches with all of his buyers giving him 100% positive feedback. To be able to focus closer to me is a big deal, I generally prefer using RF lenses to DSLR lenses (with the Minolta M-Rokkor CLE 40mm f2, Voigtlander 50mm f1.5, and my current 35mm f1.2 as my favourites) they're more compact and (imho) built just a little bit better than it's DSLR counterparts, however one of my minor gripes is the MFD of RF lenses.There's not much point in manufacturers producing an RF lens that can focus closer as RF cameras wont be able to focus properly on anything at closer distances due to parallax errors. I'm used to the RF lenses' long MFD, as primarily a prime shooter I'm used to moving farther or closer to the subject to get the shot I want. However there are times you want to focus just a little bit closer to get the shot you want, or if your taking photos in close quarters and cannot move a lot. So I've decided to purchase one. Comparison The left one is the Voigtlander Adapter, and the one on the right is the Hawk's Helicoid adapter, take note of the focusing tab on the Helicoid Adapter. It acts as a secondary focusing system once you have reached the lens' MFD. Build Quality The build quality on the Hawk's adapter is on par (if not better) than the Voigtlander adapter. The fit is quite snug, there is no play or looseness between the camera, adapter and lens even if it is shaken. This is what the adapter looks like attached to the camera with a lens.