BEFORE

AFTER

• Resize and place your image as you require.
• Copy your image (Ctrl+C) (which will be pasted later)
• Select the image on the canvas and “Filters”>”Blur”>”Gaussian Blur” from the main menu. Provide blur based on your requirement and finally click ok.
• Now paste (Ctrl+V) the image you had earlier copied
• Select this freshly pasted image, with this image selected click on “Add mask” icon in your layer’s window
• Select “Paint Bucket” tool in your tools bar, Radial gradient fill from the properties window.
• Give radial fill to your image, center being center of the focused region and the radial fill should extend little beyond focused region.

As you can now see, you are now through with your effect.