Beautiful photos everyone, Katie, Joakim, Ron, Zhangyue, Gary, Werner, Charlie, Huss!
Ron, it seems something must be triggering the banding. Even with the same subject, under similar conditions, some days there is banding even at iso 1600, somedays there is no banding even at iso 6400. When I get banding, it stays the whole shoot, consistently. I am trying to see what am I doing exactly when banding occurs. There is a chance it might be one or more of my cards. Out of habit I rotate them systematically, so this could explain why banding occurs on one day but not another. Last time I got banding, I took the camera out of my air-conditioned room, cool and dry air, to the outside, hot and humid. This is possibly another reason of sudden temperature and humidity change causing some electrostatic.