I have this same issue with my X-T4, and I just verified it's occurring with my PRIME, so we're not talking about a simple zoom aperture change. I am at loss to figure it out. Nothing is set to "auto"... everything manual (except auto focus) and I have specified my ISO, SS, Aperture and exposure compensation. Seems to me the lighting should not be shifting around just because I re-frame or move my focus from a lighter to a darker area. This isn't just in movie mode either... it's straight photo mode.
Enli reacted to a post in a topic:
Exposure changes by itself while zooming in or out