Blur Effects

Using the Blur menu commands, you can blur the entire image or just a selected area, reduce its sharpness, amount of noise, as well as create a variety of effects.

The program offers the following blur types:



Gaussian Blur. When this method is selected, the program recalculates the color components (red, blue, and green) for every point of the image, taking into account the corresponding values of the neighbouring points; as a result the points change their colors. The calculation is based on the Gaussian distribution and is named after it. In this way the values of the color components are averaged and the contrast between them weakens. The sharp borders are blurred without general lightening or darkening. The image gets dim, "cloudy".


Motion Blur. This blur method imitates the straight line motion of a camera.



Radial Blur. This method imitates motion, too. There are two kinds of motion:


Smart Blur. The effect allows you to precisely control the blur.


Surface Blur. The effect blurs monochrome image areas while preserving edges.


Lens Blur. The effect blurs the image by simulating the narrower depth of field. In the blurred area you can observe the bokeh effect.

Lens Blur Lens Blur

The Iris Blur effect allows you to accentuate a specific object in an image and blur the rest. The light spots in the out-of-focus area can turn into bokeh.

Iris Blur Iris Blur

Tilt-Shift adds the effect of a miniature, toy-like scene to your image. The light spots in the out-of-focus area can turn into bokeh.

Tilt-Shift Tilt-Shift

Effect Parameters (equal for the last three effects):


If the Fixed Preview Area check-box (not available for the last three blur effects) is enabled, all changes will be displayed in a small preview area. If the check-box is disabled, the changes will be applied to the area visible in the Image Window.

Click Default to restore the original settings.

Click OK to apply the changes to the image and close the effect dialog box.

Click Cancel to close the dialog box without applying changes.