I want a 300mm f/4, but have not quite accumulated the budget yet. However, the addition of the MC14 to my 12-100 will give me a nice 140mm (almost 300mm equiv.) lens. So I am seriously considering that. However, I definitely appreciate the coordination of In-body and In-lens stabilization with just the 12-100 on my E-M1ii. I have been trying to determine if the MC14 would continue to allow for coordination of In-body and In-lens stabilization, disable it, or allow it but ruin the effect because the software just can't pull it off correctly. If you have experience with the MC14 used this way or on another lens that allows for coordination of In-body and In-lens stabilization I would most appreciate your wisdom.