Adobe Photoshop CS3 - Manual (Page 345)

PHOTOSHOP CS3
User Guide
338
Roundness Jitter and Control Specifies how the roundness of brush marks varies in a stroke. To specify the maximum
percentage of jittering, enter a percentage indicating the ratio between the brush’s short and long axes. To specify how
you want to control the roundness variance of brush marks, choose an option from the Control pop-up menu:
• Off Specifies no control over the roundness variance of brush marks.
• Fade Fades the roundness of brush marks between 100% and the Minimum Roundness value in the specified
number of steps.
• Pen Pressure, Pen Tilt, Stylus Wheel, Rotation Varies the roundness of brush marks between 100% and the
Minimum Roundness value based on the pen pressure, pen tilt, position of the pen thumbwheel, or rotation of the pen.
Minimum Roundness Specifies the minimum roundness for brush marks when Roundness Jitter or Roundness
Control is enabled. Enter a percentage indicating the ratio between the brush’s short and long axes.
See also
“Adding brush dynamics” on page 336
“Create a brush and set painting options” on page 334
Brush scattering
Brush scattering determines the number and placement of marks in a stroke.
Brush strokes without scattering (left) and with scattering (right)
Scatter and Control Specifies how brush marks are distributed in a stroke. When Both Axes is selected, brush marks
are distributed in a radial direction. When Both Axes is deselected, brush marks are distributed perpendicular to the
stroke path.
To specify the maximum percentage of scattering, enter a value. To specify how you want to control the scattering
variance of brush marks, choose an option from the Control pop-up menu:
• Off Specifies no control over the scattering variance of brush marks.
• Fade Fades the scattering of brush marks from maximum scattering to no scattering in the specified number of
steps.
• Pen Pressure, Pen Tilt, Stylus Wheel, Rotation Varies the scattering of brush marks based on the pen pressure, pen
tilt, position of the pen thumbwheel, or rotation of the pen.
Count Specifies the number of brush marks applied at each spacing interval.
Note: If you increase the count without increasing the spacing or scattering values, painting performance may decrease.