I used the z6 this saturday to shoot a dance show.
ISO: 3200 works very good, 1600 much better. I´ll be happy with any but I need room for pp. I have shot in both settings and I´m happy with it. Take into consideration that I may print any of the images big, either for expo or for posters for the show so my tolerance may be lower than most.
AF: I have settle for now with AF-C Dynamic area and 1/2"every other point" active (menu item A5). That gives me a very precise focus that I can move around fast. Note, if you get to the far end to any direction and push the joystick again, the point will go around and appear on the other side of the screen, like pacman. I didn´t know that but I used it a few occasions. Full area with face recognition may work sometimes but It can focus on random places if no obvious face is on the frame.
RAW: lossless compressed 12 bit. Gives maximum speed and buffer. I have not encounter any limitations. Rather, I came home with waaay too many images. 12 fps even in silent mode
WB: as usual for me I set it to K3500. AWB can be all over the place and this way I have a good starting point to set as needed.
Finder: menu d8 "apply settings to live view" on and neutral picture control makes for a reliable preview. Still, images can be darker than the evf suggest so I have to compensate, a bit, accordingly. D11 "view all in continuous mode" also ON. Other, viewfinder brightness is set to "auto" and is working well. I may try the manual compensation to better match what is going on on stage...will see.
Stealth: in the set up menu, control panel brightness was set to 1 and later to completely off. I became noiseless and invisible
that bring me to silent shutter. The most appealing feature of the camera for my needs. Luck will have it, this particular show had a lot of intimate silent scenes. I had a blast shooting away worry free. At some point and just for fun, I moved at less than 3 feet from one of the people in the audience. He didn´t even notice and I was doing 12 fps
I have save all this to U3. Is the closest to M. Only drive mode can not be saved.
I had the d500 with me. I didn´t use it other than to compare at the beginning. Still a brilliant camera for shows. Sound made the cut.