I have a Nikon Z6. It's set to Auto. I have 2 6500K lights on my image, at 45° angles to either side. These two images show shadow at the bottom in one, and at the top in the other, same exposure, same everything, just two snaps one after the other. What's happening here? In the visual display, I can see a band of gray scrolling at a constant rate upwards, like a TV... Is something wrong with my camera? What's going on here? Why am I not getting consistency, shot to shot? Thanks in advance.
How can I fix or avoid this issue?