Adobe PHOTOSHOP 5.0 User Manual page 213

Color if you want light pressure to paint with the
•
background color, making a transition to the
foreground color as the pressure increases.
Note: If the highest pressure of your stylus does not
reach 100%, contact your tablet vendor. This
problem is caused by the driver software, not
Photoshop.
Selecting a blending mode
The blending mode specified in the Options
palette controls how pixels in the image are
affected by a painting or editing tool. It's helpful to
think in terms of the following colors when visual-
izing a blending mode's effect:
The base color is the original color in the image.
•
The blend color is the color being applied with
•
the painting or editing tool.
The result color is the color resulting from the
•
blend.
The following sections describe each of the
painting and editing modes.
For a color illustration of blending modes,
see page 233.
Edits or paints each pixel to make it the
Normal
result color. This is the default mode. (Normal
mode is called Threshold when you're working
with a bitmapped or indexed-color image.)
Edits or paints each pixel to make it the
Dissolve
result color. However, the result color is a random
replacement of the pixels with the base color or the
blend color, depending on the opacity at any pixel
location. This mode works best with the paint-
brush or airbrush tool and a large brush.
Behind Edits or paints only on the transparent
part of a layer. This mode works only in layers with
Preserve Transparency off and is analogous to
painting on the back of transparent areas in a sheet
of acetate.
Clear Edits or paints each pixel and makes it trans-
parent. This mode is available for the line tool ( ),
the paint bucket tool ( ), the Fill command, and
the Stroke command. You must be in a layer with
Preserve Transparency off to use this mode.
Looks at the color information in each
Multiply
channel and multiplies the base color by the blend
color. The result color is always a darker color.
Multiplying any color with black produces black.
Multiplying any color with white leaves the color
unchanged. When you're painting with a color
other than black or white, successive strokes with a
painting tool produce progressively darker colors.
The effect is similar to drawing on the image with
multiple magic markers.
Looks at each channel's color information
Screen
and multiplies the inverse of the blend and base
colors. The result color is always a lighter color.
Screening with black leaves the color unchanged.
Screening with white produces white. The effect is
similar to projecting multiple photographic slides
on top of each other.
Multiplies or screens the colors,
Overlay
depending on the base color. Patterns or colors
overlay the existing pixels while preserving the
highlights and shadows of the base color. The base
color is not replaced but is mixed with the blend
color to reflect the lightness or darkness of the
original color.
ADOBE PHOTOSHOP 5.0 205
User Guide