Tried this with various other models including imaging and was not as prevalent..In pinpoint slowly swing over a gold ring and the tab that mimics it and you will find the gold ring tone to be more mellow and the tab to be a tad scratchy. Perhaps its the nature of the beast or that I have been experimenting with various models-makes etc. over the years or I have a trained ear but to me surely can cut down the odds to dig or not...and until they come out with a unit that can tell a gold ring from a tab(don't think so) works for me...