Corel Painter Help | Adjusting Impasto lighting and depth

When you disable the Simple lighting option, the lighting sphere appears with a single light indicator. You can then add more light sources and change their position.

You can change the color of a light source. For example, you can have multiple colored lights interact with the depth to produce different textural effects. You should keep in mind that each light interacts with all the Impasto brushstrokes, so be careful not to set up colored lights that clash with the colors in your composition or light sources that create unwanted shadows.

The image above uses two different colored light sources.

You can also adjust the intensity and brightness of directional light.

To modify surface lighting to adjust depth

Choose Canvas

Surface Lighting.

In the Appearance of Depth area, adjust any of the following sliders:

•

Amount — increases or decreases the visibility of brush striations in brushstrokes. The highest value displays more striations to create the illusion of more texture and increased depth, whereas the lowest value displays fewer striations to create the illusion of smooth texture without depth.

•

Picture — controls how much color appears in the image. At its lowest value, all color is washed out, leaving only the highlights.

•

Shine — controls how much highlight appears on the surface of brushstrokes. Higher Shine values make the brushstroke look metallic.

•

Reflection — maps a clone source image or pattern onto the texture at a variable percentage. For more information, see Creating reflection maps.

To adjust ambient lighting

Choose Canvas

Surface Lighting.

In the Ambient Lighting area, make sure that the Ambient lighting check box is enabled.

Move the Brightness slider.

To remove ambient lighting, disable the Ambient lighting check box.

To add, remove, or modify a directional light source

Choose Canvas

Surface Lighting.

Enable the Enable Impasto check box.

In the Directional Lighting area, perform an action from the following table.

To	Do the following
Add a preset light source	Enable the Simple lighting check box, and click a light indicator on the lighting sphere.
Add a custom light source	Disable the Simple lighting check box, and click on the lighting sphere where you want to add a new light source. A new light indicator (small circle) appears where you click.
Delete custom light sources	Move the Lights slider to the left.
Add custom lights along a circular path	Disable the Simple lighting check box, and move the Lights slider.
Change the position of a custom light source	Drag a light indicator to a new position on the sphere.
Change the light color	Click a lighting indicator, click the Light Color chip, and choose a color.

To adjust the intensity and brightness of directional light

Choose Canvas

Surface Lighting.

In the Directional Lighting area, adjust any of the following sliders:

•

Brightness — controls how much light the light source contributes to the overall lighting color

•

Concentration — adjusts the spread of the light over the surface

•

Exposure — adjusts the overall lighting amount from darkest to brightest

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