Corel Painter X3 Win/Mac, EDU, EN Guia do Utilizador descarregar pdf (Página 139)

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116 Corel Painter X3 Getting Started Guide

Brush tracking and calibration

When you draw with traditional media, the amount of pressure that you use with a tool

determines the density and width of your strokes. Using a pressure-sensitive stylus with

Corel Painter gives you the same kind of control. Because each artist uses a different

strength or pressure level in a stroke, you can adjust Corel Painter to match your stroke

strength for all brushes by using the Brush Tracking preferences, or for a specific

brush, by using the Brush Calibration controls.

Brush Tracking for all brush variants

Brush Tracking is particularly useful for artists with a light touch. If a light stroke

leaves no color on the canvas, you can use Brush Tracking to increase sensitivity for all

brushes. Corel Painter saves Brush Tracking between sessions, so whatever tracking

sensitivity you set will be the default the next time you open the application.

The most common way of adjusting brush tracking is to apply a typical brush stroke,

such as a wavy stroke, to the scratch pad. Corel Painter then uses your stroke to

calculate the appropriate pressure and velocity settings for all brush variants.

Use the scratch pad in the Brush Tracking dialog box to customize how

Corel Painter responds to your stroke pressure and speed.

Brush Calibration for individual brush variants

The Brush Calibration controls are very useful for adjusting individual brush variants.

You can modify the pressure of your stroke on the scratch pad to achieve different

results. For example, you could use a light touch when sketching with a pencil brush

variant, but set more pressure when using an oil paint brush variant. Corel Painter saves

Brush Calibration control settings with the brush variant, so whatever sensitivity you

set will be the default the next time you choose the brush variant. If you set Brush

Calibration for a specific brush in addition to general Brush Tracking preferences, the

Brush Calibration settings override the Brush Tracking preferences.

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