TS, what shutter speed u use?
it depends on where u stay and what electricity frequency ur place uses
my place uses 50 Hz...so if my shutter speed can be divided by 50, my pic will be free of banding...for example, 1/50, 1/75, 1/100...etc
but if i use odd shutter speed that is not multiples of 50 like 1/60, 1/120...my pic will have bandings