Well, did not say anything about rotation, I said it's small. Personally, it is very small for me to be fully effective at MF, maybe you have little hands so it's ok for you. On the other hand, operating the Voigtlander Pancake lens was a lot easier because of the design of the focusing ring.
On image quality, IMHO, you are already on the wrong foot equating it only to sharpness and resolution. For example, why do some people who can easily afford the latest sharpest highest resolution Leica ASPH lenses still prefer pre-ASPH ? Why do some people prefer the Olympus 17mm over the 20mm ? And so on ... it can be a long discussion for this cool accessories section, maybe you can make a new thread.
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