There is a huge range of customisable and preset brushes. Here's how to use them

EOnce you select the Brush tool you can choose a Brush Shape from the Brush preset drop-down menu in the Options bar. Each preset is saved at a given size, indicated below the brush preview icon in the preset list.You can alter this by dragging the master diameter slider.

P^ I The Opacity of the brush defines how I I transparent the paint is - that is, how much of the colour underneath shows through the paint. By default it is set to 100%, but you can reduce this using the Opacity slider in the Options bar.

Flow is like opacity but is a dynamic

The key to opacity

You can also reduce opacity using the numeric key pad. Pressing the 0 key sets the opacity to 100%, while pressing the [5] key sets the opacity to 50%. Pressing the [1] numeric key sets the opacity to 10% and so on.

property.Whereas opacity sets a value for the maximum amount of opacity,Flow sets the minimum amount.With the Flow setting very low,say 10%,and opacity set to full,you can paint with what seems like a low opacity, except when you paint over the strokes you have just applied.

Nimble numeracy To get an intermediate opacity value like 15%, type 1 followed quickly by 5 on the numeric keypad.

Ein this case the paint 'builds, accumulating opacity the more and more you paint.This is very useful for building up tones and colours in an image gradually. You can see the effect clearly here.Where the strokes double back and cross each other the colour intensifies.The downside is that the individual 'dabs'are also visible. &

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