3.9. Zoom Motion Blur

3.9. Zoom Motion Blur
	3. Blur Filters

3.9.1. Overview

Figure 17.26. The Zoom Motion Blur filter

Original

Blur applied

The name of this filter should be “Radial”. It creates a blur in all directions around a center. The default center is the center of the layer or selection. You can set center somewhere in the layer and this center is applied to the layer or to a selection if it exists.

3.9.2. Options

Figure 17.27. “Zoom Motion Blur” filter options

Presets, Preview, Split view

These options are common to GEGL-based filters. Please refer to Section 2, “Common Features”.

Center X, Center Y

Here, you can set the zoom center. Sliders and spin buttons control the position of zoom center on horizontal and vertical axis. You can also click on the rectangle button with an arrow on the right and then click on the image to pick coordinates.

Blurring factor

Increasing factor will result in more blurring in a all directions of zoom.

Clipping

The result of this filter can be larger than the original image. With the default Adjust option, the layer will be automatically resized as necessary when the filter is applied. With the Clip option the result will be clipped to the layer boundary.

On-canvas controls

This option (default) allows you to modify blur settings directly on canvas, for easier visual tweaking of blur settings. It displays a line with handle on both ends to vary center and blurring factor.

Press Alt key to vary center only.

Press Ctrl key to vary blurring factor only.