ZBrush Alpha Adjust Curve

Initialize and put the Alpha Palette on a tray. Curves are compressed in AlphaAdjust; click on it to open:

Set up Simple Brush, Drag Rectangle Stroke and Toy Plastic Material; Ctrl F to fill canvas:

   Z Intensity 100:

Drag a stroke and hit W for the move gyro:

Note – ZBrush uses 16 bit grayscale ... use TIFFS [they support 16 bit channels] for exporting your displacement maps from ZBrush.

Alpha

What is it? Basically a grayscale image.

What is this ramp about?

Black is on the Left. White is on the right.

Higher values are at the top; lower values on the bottom.

We are going to fiddle with this Alpha curve. If you mess up, there is RESET and UNDO:

Click on the lower left corner and pull to the top left; and the right upper corner down:

Add a new point by a click and drag:

Add another curve; you can also “tighten” the curve by dragging on the circle:

You can make a curve go to a point if you drag it off the map and back on again without letting go; you get the curve BACK the same way:

Click on a point to ZOOM:

Focal Shift

Drag it to the right and see what happens:

Noise

Switch to another  Alpha Brush:

To make this setting available for future use make modified alpha; you can see it is brush 56 ... the original brush 19 is unchanged: