How to Quickly Fix Chromatic Aberration in Photoshop
Chromatic aberration is unwanted color distortion that you sometimes notice around the edges of photos. This is because the colors of the light have different wavelengths, which means that your camera lens refracts them slightly differently. Here’s a quick fix for compensation in Photoshop.
The effect is usually most noticeable around the outer edges of photographs, where hard lines make it clear where different colors don’t quite match. In this video from Jimmy McIntyre, we’ll learn an easy way to minimize the presence of chromatic aberration. There are no fine adjustments to color adjustments in this method; rather, it simply duplicates the photo, uses a 20px Gaussian blur (which you should adjust based on the size of your photo), and then sets the blend mode of the blurred layer to “color”. This removes the aberration but blurs the colors of the entire photo, so the next step is to create a mask so you can control where you want to apply the effect.
And it’s all. As he says in the video, McIntyre also offers presets that you can download to make this even easier.
Quick Photoshop Secrets 4: Quick Chromatic Aberration Removal | Jimmy McIntyre