Big, big, big problem. I need a video camera under 3K, body only, for 4k mechanic laboratory video. No need auto focus or OIS. I have canon EF lenses. To use in MFT I need Booster but, GH5S + Booster = A7III or less. In low light both are more or less the same. The unique difference it is 240fps vs 120fps and I prefer 240. Relay it is so big difference, in the real world, between 240 and 120? I have a6500 and 120fps are bad, like my English I use external