I posted this bug report also elsewhere but thought I'd do it here as well.
I found an apparent bug in the operation of the Z8 with the MB-N12 grip. The multi-selector for vertical shooting should mirror the camera's multi-selector (according to the MB-N12's manual as well as the correct behavior in earlier cameras such as the D6 and D850) but in this case (with the Z8) it actually acts like the sub-selector. I was really confused when I run into this but eventually figured out what it is doing. It's something I can live with but I'd prefer the functionality of the previous cameras (as described in the manual).
In full-image playback the sub-selector's two axis (left-right and up-down) switch between consequtive images and between first images of bursts. The multi-selector on the camera instead allows one to switch between consequtive images and between playback display info modes (i.e. whether blinkies, RGB histogram etc. are displayed or just the image). The latter would be my preference for the multi-selector on the vertical grip. I don't want to switch between first images of bursts just about in any scenario as when I'm reviewing I really want to look at individual images.
Anyway it's a minor issue but still I'd like Nikon to fix it so it matches the description in the manual as well as the previous cameras. Or at least offer an option to configure the camera so that this is the case as an option.
I do like the Z8 and it clearly fits my intended use (silent photography at concerts, funerals, weddings etc.) but it does feel a bit like making ghost images when there is no sound from the camera when taking pictures. ;-) I don't like the artificial speaker shutter sound as it sounds different depending on the camera orientation and depending on ambient sound level I might not hear it in one orientation (or if increased in volume, it might be too loud in the other orientation). So I keep the shutter sound off and am getting used to it. Maybe...
However, to me it doesn't have the image quality at high ISO that the Z6II or D6 have, and I'm hoping Nikon would make a variant of the Z6 II with Expeed 7 and better AF performance on approaching subjects which was the main limitation of the Z6 II's AF system for me. The keeper rate fell significantly when the subjects were approaching the camera. Another limitation is the tendency to focus on vertical lines in the background if the main subject is dark or lit from the behind. This problem exists on both the Z6 II and Z8 but the D6 handles such situations much better with its all cross-type AF system.
Anyway the Z8 is a bit against the philosophy that I have for photography - I would prefer to carefully view the subject and monitor what is happening and then decide on a single image to capture at the right moment, minimizing post work. The Z8 is more designed to capture ALL moments and while that technique is effective (certainly since the camera can be easily set to shoot at e.g. 30 fps when required) but I really find it a pain to deal with the post work from this approach. So why not just shoot in single shot mode? Because it takes discipline and I still find watching on the computer screen on the camera for a long time tedious and irritating, although the delay is much shorter now and it can be used to time single shots which I couldn't do with the Z6 II.
Anyway I hope Nikon puts out an improved 24MP FX camera rather than making all of their cameras super high resolution. I would be very happy purchasing a 24MP FX model with similar EVF speed and close to similar AF performance that the Z8 has, either in a Z8 or Z6 series chassis. I'd probably use it most of the time instead of the high-resolution Z8. Because then I'd have less post work to deal with and most images are not printed large either, and somehow I felt the Z6 II images in indoor low light had a magic which I don't find in the Z8 images in similar scenarios.