Nikon Z8 - Aperture Randomly Changes In Manual Mode

[Munnerz.Photography]

Hi, I'm new to the forum but it looks great and I'm excited to be part of it. I have a Nikon Z8 and I've suddenly encountered a problem where my aperture randomly changes even though I'm in Manual mode. The other interesting thing is that it only happens in one of the Z8 Banks - there are 4 and it only happens in Bank D. This leads me to believe that I have inadvertently changed one of the settings in Bank D only. Has anyone encountered this problem before?

 

[ajrmd]

I would be looking at the custom settings for the lens function and perhaps you've assigned aperture to the control ring or another button on the lens that you're inadvertently touching. Perhaps that occurred in your Bank D? See: https://onlinemanual.nikonimglib.com/z8/en/csmf_custom_controls_shooting_251.html