"AF response when using four thirds lenses has been improved."
I wonder what that means. Will 4/3 lenses finally perform as fast as native ones?
P.S. Might want to update the thread title to mention the E-M1. There are other 1.4 firmwares already, just not for that camera.
Do you actually believe that is likely? I wonder if it is at all even possible? That would increase the value of the big honking SHG glass though.
Which SHG lenses are fast? Do you mean that the designs were updated over their life?
I can tell you right now that the AF response with 4/3 lenses is as good with the E-M1 as it is with my E-3 and was with my E-5. I really can't spot any difference after numerous tests. Whether that has something to do with the fact that I have the fast SHG lenses I don't know.
It's not as good in low light & does not have twin cross AF sensors (like the E3, E30 & E5), only single vertical sensors & because of that there are circumstances where it struggles, especially black dogs in low lighting indoors.