have the converter with Olympus 45mm 1.8 tested on DMC-GH2 (with Step Up Apdapter 37-55) thus obtained a bright telephoto lens with about 76mm focal length, when shooting with less light may lack image stabilization cause problems with focus, otherwise see resolution and sharpness in the middle of very good to edges allows the focus to essential one of drawbacks that noticeable pincushion distortion occurs at the edges of picture, CA's also at edges are visible, for portrait shots from a distance fits the somewhat chunky design well.
