Removing Purple Fringing in Photoshop
Purple fringing occurs depending on your camera’s senor technology (most consumer cameras do create purple fringing), the quality of your camera’s lens, and contrasting edges in your shot. Chromatic aberration is the more technical name for purple fringing which is not always purple. There are three ways you can avoid purple fringing: put an Ultraviolet (UV) filter on your camera lens, buy better camera (Prosumer grade), or remove it in Photoshop.
Here is a example of a photo with purple fringing (left before and right is after removal):
First open your photo with fringing in Photoshop. Then create a new Hue/Saturation adjustment layer or main menu bar > Image > Adjustments > Hue/Saturation…
Select the Blue Channel to edit in the drop down menu in the Hue/Saturation dialog box.
Then select the first color picker icon like show in the below image.
Use the color picker to pickup the purple fringe color on the photo. You may need to zoom in close to the most prominent spot of the fringing.
Now use the Saturation slider ing the Hue/Saturation dialog box and move it to the negative side until the purple fringe fades away but not too much or you will lose some other purples and blues you want to keep. If you lose some color in other parts of the photo that you want to keep you can use a layer mask to cover up just the area you want to remove purple fringing.
The end result is this:
Full Size:
