When attaching the camera to the adapter was noticeably sluggish than my previous MFT lenses with the exception of quite tightly seated 45 / 1.8, but still in the tolerable range. Is probably because, as with the 45 / 1.8 the outer ring on the adapter side contact surface a touch more survives and its surface is a little rough.
Then the lens on the adapter, switched, and it happened to me as the guy from the famous M * M * dia-RKT-Veräppelung: "I've got a black screen !!!!"
So just a hit of the cucumber under these adapters?
Fortunately not, because after removing and re-attaching the adapter it was then, and as a result no dropouts. Was probably not latched properly the first time.
The pictures made since then are impeccable, technically so much better than the 14-45, any problems in the cooperation of camera, lens and Adpter are not recognizable.
Strong buy recommendation!