Is there anyone else who can provide some corroboration on the focus speed of the Panny 45-175 on the OM-D versus the Oly 12-50? I just purchased the 45-175 and have only had a chance to try it at high ISO and low light, so it may not be a fair comparison. However, the 12-50 focused lightning fast under these conditions and the Panny was hunting quite a bit. Is this to be expected? Thanks!