For low light, and I mean really low light – when you need autofocus, the Sony a7r III and 24mm f/1.4 GM are where you need to go. The lights were super dim, and the windows blocked out, but autofocus worked like a champ, and the touch screen is quite useful.
While the Sony has become my least favorite system to use (because I don’t like the ergonomics, control layout, or menus), the image quality and autofocus are second to none. The 24mm f/1.4 GM lens though is the best 24mm lens I’ve ever used.