Gaussian Blurring an Object
Photoshop CS6 Tutorial
How to Add a Gaussian Blur in Photoshop
There are multiple ways to blur an image in Photoshop. Under the Filter > Blur menu there are several choices.
In this topic we'll demonstrate the Gaussian Blur. As you become comfortable with the Gaussian Blur, you may want to experiment with the other blur options that are available. The Gaussian Blur is pretty much the swiss army knife of Photoshop blurs.
Open an image in Photoshop (File > Open).
With the image layer selected in the Layers panel, press Cmd/j (PC - Ctrl/j) to duplicate the layer.
Name the upper layer Blur.
Select the Blur layer and choose Filter > Blur > Gaussian Blur.
Make sure that Preview is selected, then drag the slider and watch the image. Once you are satisfied, click OK and the blur is applied.
Click the Blur layer in the Layers panel, press and hold Option (PC - Alt) and click the Add Layer Mask icon. The lower layer is revealed because the mask is black.
Select the Brush tool (b key), choose a large soft edged low opacity brush and set the Foreground Color to white.
Click the mask, then paint the mask to expose the Blur layer.