A friend of mine is deciding on what camera to choose to step up from his Canon 6D. He wants something better for video, but it must be good at stills also. He is considering a GH5 with Speedbooster (so he can use it with his Canon glass, mainly Sigma primes). His main concern is autofocus for photography, (no sports shooting, just casual portraits and street photography) so if anyone has any experience with it, it would be greate if you share. Thx!