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Adjusting Surface Lighting
Lighting can be a big part of the overall depth effect Impasto creates. Just as the right lighting can bring out the deep textured look of a stroke, the wrong lighting can wash out the effect altogether.
The Surface Lighting controls let you set up the position and attributes of light sources that shine on your Impasto brush strokes.
These controls are global, meaning they affect all the Impasto brush strokes on all layers.
Setting Light Position
The lighting sphere shows all the possible surface angles and how the lights illuminate them. The light indicators on the sphere show the current positions of all the light sources.
The lighting sphere with a light indicator.
Adding and Deleting Lights
You can add as many light sources as your system's memory allows. Remember, each light interacts with all the Impasto brush strokes, so be careful not to set up colored lights that clash with the colors in your composition or light sources that created unwanted shadows.
To add a light
To delete a light
Viewing Lights
The Display slider beneath the sphere controls the brightness of the sphere, so that it's easier to see light positions. It does not affect the lights themselves.
The Show Light Icons check box lets you hide or show the light indicators on the sphere.
To change a light's angle
Setting Light Properties
The three Light Controls sliders let you set the intensity and brightness of a light source.
- Brightness indicates the amount of contribution of the light to the overall lighting color.
- Conc (concentration) adjusts the spread of the light's shine over the surface.
- Exposure globally adjusts the overall lighting amount from darkest to brightest.
You can also change a light's color using the Light Color control. You can have multiple colored lights interact with the depth to produce different textural effects.
To change light color
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