Upload & Sell: On
I received my adapter this afternoon after a long wait.
1: Beautifully built. I was quite surprised at the build quality, fit and finish. Compared to my other adapters (cheapies) it's very well build with a nice glossy chrome like finish
2: Focus is slow but it works fairly well on my 45 2.0 and 90 2.8 as to be expected. In fairly bright sunlight it seems to work fairly well up to F8 and even F11. In normal light I think that 5.6 is about as slow as you can reliably go, but it does well in indoor room light up to 5.6 with pretty good accuracy. You can easily tell when it misses as it doesn't do a second round of focusing.
3: Just forget the 28 2.8, even in bright light it's not reliable.
4: It's fairly loud but only slightly more than my old Pentax K10 with screw drive focusing. And speed is about the same as my K10 as well. Takes two long focus steps then zones in with a couple more tweaks.
5: I had it hang once where it seemed to reset the camera, this was with the 28 when it was seemingly confused. It never had a problem with the 45 and 90.
6: The manual focus screw seems to work very well. It will take time to get used to it but it works well. As others have mentioned an adapter with just the wheel would be a great system.
7: Very Important: I usually shoot Aperture Priority. Make sure to set the aperture IN THE CAMERA to the widest aperture or you will have exposure problems. It looks like since the camera senses an auto-af lens it needs to think it knows the aperture. So if you set it to f8 for example it thinks that it's going to be able to stop down to F8 but it can't so it causes exposure errors.
Will I keep it? I'm not sure, I don't use AF much anyway but it is nice to have when you need it or for handing off the camera. Overall it's about what I expected in operation and above what I expected in build quality..