Inside Photoshop


Don’t lose edge detail when you blur – use the Surface Blur filter

Inside Photoshop

by Amy Palermo

Part of the filter lineup since Photoshop version CS2, the Surface Blur filter’s claim to fame is that it’s great for blurring images while preserving edge details. For example,¬†Figure A¬†shows the same image filtered with the Surface Blur filter and with the Gaussian Blur filter, each with maxed out settings. As you can see in the Surface Blur example, you can still recognize the image whereas the Gaussian blur looks like a blob. Keep in mind that this is just an extreme example of the differences in the two blur filters; you probably wouldn’t use the filter in this manner.

Figure A: ORIGINAL
Article figure image

When you’re using any blur filter for retouching, you may want to preserve some of your original image detail. And even though the Surface Blur does a good job of assisting in keeping edge detail intact, you’ll still likely experience a slight loss of edge quality. Plus, there may be other areas of your image you’d like to preserve as well. So we’ll show you how you can get the best of both worlds: apply the Surface Blur filter and preserve some of your image’s original detail.

To follow along with our example,[…]

 

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