Hi folks, Out if curiosity I've watched some YouTube videos on the AF capabilities of other systems. One was a turorial by Gary Fong on optimizing AF in A7 bodies and he had one on optimizing the A6000 as well. Canikon have several as well. I didn't see anything for om-d or e-m1. Northrup has tutorials for them but it's the advice. Some folks have posted S-AF speed tests, but nothing more. Has anyone found a really good tutorial on optimizing C-AF? Video better than reading for my attention span.