[0.25 lb] Backfocus dimension is eerily perfect, seems to reach infinity exactly at the infinity stop on the lens. Slightly worrying: what if it doesn't quite reach infinity? On the other hand, why argue with perfection?
This appears to be a single piece of metal, finished inside and out with some matte black anodizing or paint. Slightly worrying: what if it wears off and leaves black dust inside the camera? Chrome plated wearing surfaces would be more reassuring. But again, no actual sign of a problem.
Orientation of the lens when screwed on: quite acceptable, pretty close to centered. Fortunate, since it can't be adjusted.
Price: surprisingly low for something from this premium brand.
So, hey, seems like by far the best option out there for this kind of adapter.

[0.25 lb] I had a lot of Leica R lens that were just sitting around for years not being used,so I bought an Olympus OMD-5 so that I could possibly use the Leica lens with an adapter. There is manual focusing only, but the images are tack sharp.The color reproduction is what Leica is noted for. The only con,to me, is there is no built in indicator to indicate that you have the correct focus. This can slow you down. The quality is more than I expected. Do not get rid of your old Leica lens just because Leica has abandoned us. Technology has moved to where we can now use these lens on today's cameras with the new adapters. The quality of this is adapter equal to the quality of the Leica lens which means that you have a quality match.

[0.25 lb] I was initially hesitant to pay for this adapter, until I started adjusting and disassembling other adapters. I have adapters from every brand B&H sells and a bunch of others too. I was shocked at how most are built. It's just not worth saving money on an adapter that might fall apart and drop my lens on the pavement.

[0.25 lb] Using this in on my OM-D EM-5, Excellent fit and quality!

[0.25 lb] I'm thrilled to be able to use my Zeiss lenses on a digital camera -- not quite automatic, but it works

[0.25 lb] I had a similar experience as the first reviewer. I did not find that the Voightlander was loose, but did notice that there was not a distinct click when the adapter was mounted on the camera. I did not realize that I would need to use a piece of plastic to hold the aperture of the lens open with the Voightlander, while the Novaflex has a ring on the outside that lets you adjust the aperture manually. I was afraid that the little snippit of credit card wedged in the aperture control of the lens might some day work loose and scratch the sensor on my G1, so I decided to go with the Novaflex. The machining on the inside doesn't look perfect, but the adapter fits snugly and functions perfectly.

[0.25 lb] I heeded the comments of the first 2 reviews and purchased this more expensive adapter. I just bought into MFT format and got the Lumix GX7. I've been having fun manual focusing all my Pentax lenses with this adapter. Images came out great especially with the FA 43, FA 31and the DA 50-135. Well worth every penny.

[0.25 lb] The Novaflex adapter has let me use my wonderful really old Pentax M42 50mm macro lens again, on my Panasonic GF1 and GH2. With the crop factor of 2, the lens becomes a 100 mm in 35mm terms, a very convenient focal length for macro work. The build quality on the adapter is excellent.

[0.25 lb] I purchased this adapter to let me shoot my legacy 35mm lenses. It works perfectly. As for the legacy lenses, they were fantastically expensive and I sorely missed auto-focusing and image stabilization. But this well-crafted adapter let me shoot them perfectily--with auto-exposure--on my Panasonic DMC GX1.

[0.25 lb] Very good lens adapter for use with the Panasonic AG-AF100. If you own lots of lens it's a must have to broaden your choices. Very tight fit, well machined and solid. John Jenkins. @