Now let's look at the paintbrush.
I have opened: 'White Beach'.
I press: Ctrl-1,
to see the image at its 'real' size.
I can navigate through the image
by pressing the middle mouse button.
Before I use the paintbrush,
I will create a new empty layer,
so I am not painting on the image,
but on a separate layer.
Now I will click on the Paintbrush tool
in the toolbar.
I can also press: 'B'
to select the Paintbrush.
To change the size of the brush,
I press the Alt key,
and scroll forward
to increase the size,
and scroll backward
to decrease the size.
In the Tool Options,
I can see the size of my brush changing.
I set the size to 60.
The color I will be painting with,
comes from the Foreground color,
which by default is set to black.
Behind the Foreground color,
is the Background color,
which is by default set to white.
You can turn them around, by clicking
on this little arrow, or by pressing the 'X' key.
I will now draw a stroke by dragging.
A fast way to delete the content of a layer,
is to press the 'Delete' key.
I will delete the content of the brush layer.
I can also draw straight lines.
I click, then I press Shift,
and I click somewhere else.
The line is a preview, to help you see
where the stroke will be.
To get a straight horizontal or vertical line,
press 'Shift' plus 'Control'.
Because the brush is on a separate layer,
I could lower the opacity of the layer.
In the Tool options we see the brush
also has an opacity slider.
We will have a look at the brush opacity slider
in a moment.
In the Tool options,
we see a small thumbnail.
This is the brush I am currently using.
If you click on it, you will get an overview
of the brushes you have.
I have added some extra brushes.
At the end of the next lecture, I will show you
how and where you can download free creative brushes.
Lets select another brush.
Notice, that if I hold my mouse
above the thumbnail,
when I scroll,
I can also select another brush.
Another way to select a brush
is by going to the Brushes panel.
The advantage of the Brushes panel
is that we can make the panel larger.
Lets also make
the preview of the brushes bigger.
I click on the 'Configure this tab' arrow,
go to 'Preview size', and select 'Extra large'.
The small plus sign
at the bottom right of a brush icon
indicates that the actual brush
is larger than the preview.
To get a bigger preview,
like in the layers panel,
click on the icon
and hold the mouse down.
A brush with a red triangle
is called an 'animated' brush.
An animated brush will show
different brushes while you paint,
so it has more variation
than a standard brush.
This is a normal brush.
And this is an animated brush.
Now lets have a look
at the Opacity slider,
and the relation between the Opacity slider
and the 'Force' slider.
I select a round brush,
and set the size to 100.
I will paint with black.
Instead of lowering the Opacity
of the layer I paint on,
I can also lower the Opacity of the brush.
Lets put it on 50%.
When I now paint,
the brush will be 50% opaque.
As long as I draw, and keep
the mouse button pressed down,
my brush will not get darker
than 50% black.
When I let go of the mouse, and paint again,
I add another 50% black,
which will add up to 75% black.
As we can see, the brush will not get darker
when I paint over and over the same area.
This is not a very natural way
of adding paint.
We are used that when we paint with a marker,
repeatedly over an area, that area gets darker.
This is what the 'Force' slider does.
Force will give you the natural way
of adding paint.
I will undo with Ctrl-Z,
and set Opacity back to 100%.
I will set Force, to about 20%.
I will make the brush soft,
with the new 'Hardness' slider,
to about 25% hardness,
and set the size to about 300.
When I now paint
I don't have to release the mouse.
The paint gradually builds up,
until it becomes fully opaque.
You can also combine
Force and Opacity.
To prevent that the hat, becomes completely black,
I will set Opacity to 80%.
If I release the mouse,
and start painting again,
the hat gets darker,
but will still not become completely black.
In the next lecture,
we will look at special effects for brushes.
