Blur - Radial Zoom
The Blur - Radial Zoom effect creates blurs around a centre point, simulating the look of a zooming or rotating camera. You can use a matte to isolate the area of the image from which you want the effect to radiate from. For example, in the illustration below, a circular matte was created to mask the eyeball and a Negate effect was applied so the blur is outside the matte. Then the centre point was positioned on the character's iris, which is the centre of the matte.
For detailed video tutorials and sample scenes by Adam Phillips, see toonboom.com/resources/video-tutorials/chapter/adam-phillips-harmony-effects.
- In the Camera view, enable the Render mode.
- From the Node Library view, drag a Blur Radial Zoom node to the Node view.
- Connect your drawing to the Blur Radial Zoom's right port.
- Connect the Blur Radial Zoom node to the Composite node.
- On the Blur Radial Zoom node, click the yellow square properties button to open its property editor.
- In the Layer Properties windowo, increase the Blurriness value.
- In the Direction section, click on any of the direction presets to modify the blur spin or zoom.
- Connect a drawing and a background image to a Composite node.
- Connect the Composite node to the Blur-Radial Zoom node.
- Connect a Blur-Radial-Zoom node to the Composite node and add the Write and Display nodes.
- Create a matte to isolate an area of the image. In the Timeline view, click the Add Layers button and select Drawing. Give the layer a name, such as Mask.
- In the Drawing view, draw a filled shape.
- The blur should radiate outwards from the mask. To do this, connect a Negate node to the mask. In the Negate properties, select the Negate Colour and Negate Alpha options. Deselect the Negate Colour Clamp to Alpha option.
- Connect these nodes to the rest of the tree. Your node structure should look like this:
- In the Blur - Radial Zoom property editor, Center section, select one of the following options:
|‣||2D Path: Lets you move the centre point visually in the Camera view.|
|‣||Separate: Lets you control the x and y axis by entering values in the fields or by moving the centre point in the Camera view.|
- Set a value for the Blurriness.
- With the Blur - Radial Zoom node selected in the Node view, select View > Show > Control or press Shift + F11.
A red centre point appears in the centre of the Camera view.
- In the Tools toolbar, select the Transform tool.
- Click the Animate Mode button in the Tools toolbar if you want to create function curves to keyframe over time. Otherwise, values will be created for the duration of the scene.
- Move the centre point to the desired position. In our example, the centre was moved to the centre of the mask.
- In the Node view, select the mask you created.
- In the Camera view, move the mask to the desired position.
- Continue to adjust the blur values until you achieve the desired effect.
Blur - Radial Zoom Properties
Activated by default, this option readjusts the blur when the elements undergo a change of depth or scale. When this option is deselected, the effect's values remain unchanged regardless of any depth or scale changes. This option should be deselected when multiple drawings are composited and attached to this effect.
2D Path: Lets you move the centre point visually in the Camera view.
Separate: Lets you control the x and y axis by entering values in the fields or by moving the centre point visually in the Camera view.
|(x) and (y) Axis||When the Separate type of centre is selected, lets you individually set the x and y coordinates for the centre.|
|Blurriness||Amount of blur applied to the layer.|
Constant: An equal, constant blur is applied on all pixels.
Linear: A gradual blur is applied on all pixels.
Quadratic: An exponential blur is applied on all pixels.
|Direction||Lets you select preset blur types or create a custom blur.|
|Presets||A set of preset radial, zoom, and spiral blurs to get you started. You can then adjust the type to customize the blur.|
|Custom||Create your own blur by entering a value for the direction of the blur lines.|
|Fall Off||The distance where the blur fades from the edge of the image. Select a value between 0 and 1. A fall-off rate of 0 causes the blur to fade out slowly, distributing the blur evenly from the edge of the character to the farthest edge of the blur. A fall-off rate of 1 causes the blur to fade out quickly, so the blur is heaviest closer to the edge of the image.|
|Bidirectional||Applies the blur on both sides of the pixel.|
Affects the quality of the blur by defining how fine the reference radial grid is on the image. This determines the width of all the wedges. A higher quality yields achieve better results, but will be slower to render.
Precision: Blurs the image the number of times the precision indicates at different radius (between 0 and the specified radius).