Get Rid of the Purple & Green Fringe on the Edges of Things in My Image?

Click on the Lens Corrections icon (it’s the sixth one from the left) beneath the histogram, click on the Color tab, and then turn on the Remove Chromatic Abberation checkbox. That alone might do the trick, but usually you’ll have to go to the Defringe section below and drag the Purple or Green Amount sliders to the right until you see the fringe disappear (well, the edges turn gray instead of purple or green, so it just blends right in). While I normally don’t have to do this next step, you’ll want to know it, just in case: if you move a slider (the purple or green) and it doesn’t affect the purple or green fringe, you can move the Purple or Green Hue sliders to find the exact shade of the fringe color. Again, I hardly ever have to move the Hue sliders, but it’s nice to know they’re there in case you do.