### 3.10. Circular Motion Blur

#### 3.10.1. Overview

Figure 17.31. The Circular Motion Blur filter

Original image

Filter applied

This filters creates a circular blur 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.

#### 3.10.2. Activating the Filter

This filter is found in the main menu under Filters → Blur → Circular Motion Blur….

#### 3.10.3. Options

Figure 17.32. “Circular Motion Blur” filter options

Presets, “Input Type”, Clipping, Blending Options, Preview, Merge filter, Split view

  | Note
  These options are described in Section 2, “Common Features”.

Center X, Center Y

  Here, you can set the rotation center. Sliders and spin buttons control the position of rotation 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.

Angle

  More Angle will result in more blurring in a circular direction.

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 move rotation center and transform.

  Press Alt key to only move rotation center without transforming.

  Press Ctrl key to rotate by 15° steps.

3.9. Variable Blur |  | 3.11. Linear Motion Blur

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