Well- if you want to keep 10bit than you can't use ANY of the effects/filters which have no 32bit logo- this is for sure. Even if your source is 8bit, but has many gradients higher than 8bit processing precision helps to avoid additional banding and if possible should be used.
Another thing for sure- DNxHD source can't show more banding than XDCAM HD or AVCHD- in worse case it should be about the same.
Another thing for sure- DNxHD source can't show more banding than XDCAM HD or AVCHD- in worse case it should be about the same.

