I have been shooting with the 4/3 40-150mm with adapter for about 9 months now. What I am finding is that on my E-P1, the best shutter speed I can get is about 1/250 without camera shake in the picture, at the pixel peeping level. This really isn't more than a stop difference. The rule of thumb would be 1/300s. I'm thinking that this may be a grip issue. I have large hands and with this lens on it, while I actually find it more comfortable to shoot than with the pancake or kit lens, I still see lots of shake. The larger lens balances the camera better for me, but I'm just not able to hold it steady. I know the IS works because with the 17mm pancake, I've gotten acceptable results at the pixel peeping level down to 1/10s and sometimes 1/5s. Anyone have any recommendations on how to steady this setup without a tripod? Maybe the mFT version works better and balances better? Any suggestions would be appreciated.