Remove ringing around sharp edges?

[ddybing]

Hi.

What is your "go-to" methods for removing ringing around sharp transitions/edges, such as in this example shot? There is a halo/ring around the person's white shirt and the background.

I've tried to play around in Staxrip and Hybrid with different DeHalo and DeRing filters but I feel that there is very little, if any, difference.

Is there any true way to remove/reduce the ringing?

Thank you in advance!

[Selur]

DeHalo_alpha or FineDeHalo would be the first filters I try. (the default values will probably not help)
Share a sample of the unfiltered source if you need suggestions for your file.