In photographing my daughter figure skating, I've been renting pro lenses for my DSLR. But wondering if it would be worth while going to micro 4/3 for this. I much prefer using my M 4/3 camera (a GX7, and am planning upgrading to a G85, GH5 or the new OM-D), and would prefer to invest in this platform. Should I even consider investing in a M 4/3 lens for this? Figure skating is one of the most difficult sports to photograph because low light is thrown into the mix of long distances and a moving subject. If so what would be the best bet? Oly 40-150 2.8 or one of the faster Panasonic lenses? Or should I just suck it up and buy a large sensor set-up for this? Sounds like the biggest issue may be AF rather than the lens, correct?