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What's New in Adobe Photoshop 4.0
Adobe Photoshop 4.0 includes new features
for automating task sequences on a single
file or a batch of files, creating color sepa-ration
tables based on printer profiles, viewing and
magnifying images, moving and copying selec-tions,
marking images with digital watermark pro-tection,
applying transformation effects, using
guides and grids, and applying tonal and color-
correction effects, plus a collection of new creative
filters. This version of Adobe Photoshop also
enhances support for file formats and includes
many new commands, palette features, and
keyboard shortcuts that simplify common tasks.
Interface enhancements
The user interface for Adobe Photoshop 4.0 on the
Macintosh has a new three-dimensional look.
Icons and buttons now appear raised in palettes,
dialog boxes, and the toolbox, and appear
depressed when clicked, simulating the look and
feel of actual buttons. On both the Macintosh and
in Windows, some palette icons now are buttons,
letting you do more tasks by simply clicking,
rather than choosing commands from menus.
New tool tips and context menus help you quickly
identify different interface elements and choose
commonly used commands.
Tool tips for on-screen descriptions
When you position the mouse pointer over a tool
in the toolbox or over a palette item, Adobe
Photoshop 4.0 displays a tool tip with a short
description of the tool’s name or palette item’s
function. You can turn the display of tool tips
on or off.
To turn off the display of tool tips:
1 Choose File > Preferences > General.
2 Deselect Show Tool Tips, and click OK.
Context-sensitive menus for related commands
You can now display various context menus with
subsets of commands relevant to the active tool,
selection, or palette item. On the Macintosh, you
display context menus by pressing Control and
holding down the mouse button; in Windows, you
click with the right mouse button.
Actions for automating tasks
Using the new Actions palette, you can now record
a script of commands and tasks, called an action,
and apply it to another file or to a batch of files at
once. When playing an action, you can have Adobe
Photoshop pause after specified tasks, letting you
enter new values in the dialog boxes for those
tasks. The button mode of the Actions palette
replaces the Commands palette in previous ver-sions
of Photoshop. For more information on
these features, see Chapter 15, “Automating Tasks,”
in the Adobe Photoshop User Guide.
Note: Command sets that appeared in the
Commands palette in earlier versions of the program
do not transfer to the Actions palette. If you’re
upgrading to Adobe Photoshop 4.0 from an earlier
version, you must recreate the command sets.
Adjustment layers for tonal and color-correction effects
In Adobe Photoshop 4.0, you can now add a new
type of layer, called an adjustment layer, to your
image. Adjustment layers let you apply tonal and
color-correction effects, such as brightness or
curves adjustments, to specific parts of your image
without changing it permanently. You can try out
different effects and then cancel them by hiding or
deleting the adjustment layer.
For example, if you create an adjustment layer for
deepening the contrast, the new contrast setting
affects only the layers that lie beneath the adjust-ment
layer in the Layers palette. By changing the
stacking order of the adjustment layer or including
it in a clipping group, you can further control
which layers are affected by the adjustment.
Because the adjustment layer also has a layer mask,
you can paint it to modify the adjustment mask
and confine the effect to just selected areas of the
underlying layers. For more information on this
feature, see “Using adjustment layers” in Chapter
11 of the Adobe Photoshop User Guide.
Digital watermarking for copyright protection
The new Digimarc filter lets you attach a digital
signature to your image to provide authorship
information and help protect against unautho-rized
reproduction of the image. This digital
watermark does not appear when the image is
printed or displayed online, and leaves the quality
of the image intact. For more information on this
feature, see “Using the Digimarc filters” on
page 16.
Guides and grids for aligning artwork
To help you place artwork precisely in your image,
Adobe Photoshop 4.0 includes guides and grids.
You create horizontal and vertical guides by drag-ging
from the rulers into the image. Using the
move tool, you can easily adjust the position of
guides or remove them from the image altogether.
You can also display a grid to divide your image
into evenly spaced sections. You can have tool
pointers and moved selections snap to guides and
the grid, and you can hide guides and grids when
you want to view just the image. Guides and grids
do not print with the image.
New selecting and editing features
This version of Photoshop contains new features
to help simplify selecting and editing. You can now
use the selection tools—the marquee, lasso, poly-gon
lasso, and magic wand tools—to select areas
and to move selection borders only. To move a
selection border using a selection tool, you posi-tion
the pointer inside the border and drag. This
new behavior lets you adjust selection borders
without inadvertently moving the pixels out
of position. To move the pixels in a selection or
layer, you now must use the move tool. You can
activate the move tool when any other tool is
selected by pressing Command (Macintosh) or
Ctrl (Windows).
When you paste a selection using the Edit > Paste
command or by dragging, Adobe Photoshop 4.0
automatically pastes the selection as a new layer in
the image, rather than as a floating selection. You
can also convert a selection directly into a new
layer, using the Layer > New > Layer Via Copy and
Layer Via Cut commands. This version of Photo-shop
also preserves pixels that have been moved
off the visible canvas.
New zooming and viewing features
You can now change the magnification of an image
by specifying an exact percentage (for example,
200% to double the magnification).You can enter
the desired value in the zoom percentage box at the
lower left corner of the window, or in the Naviga-tor
palette (see “New palettes and palette enhance-ments”
on page 13).
The new View menu contains commands for view-ing
and zooming in or out on an image. The Fit on
Screen command adjusts the zoom percentage of
the image window so that it fills the screen. The
Actual Pixels command returns the image to a
100% view, while the Print Size command lets you
view the physical size of the image as it would
appear if printed.
New layer and layer mask features
In addition to the ability to create adjustment lay-ers,
this version of Adobe Photoshop includes new
and enhanced features for working with layers.
The commands in the new Layer menu let you cre-ate
new layers, adjustment layers, and layer masks,
rearrange the stacking order of layers, merge and
flatten layers, and convert selections into layers.
You can also create a clipping group from a set of
linked layers and select layers at any time using a
context menu.
Several new features simplify your ability to work
with layer masks. Now you can have a layer mask
hide or reveal the entire layer, or, if you have an
existing selection, make the mask hide or reveal
the selection. In addition, black on a layer mask
now indicates hidden areas always, while white
always indicates revealed areas.
New gradient capabilities
Adobe Photoshop 4.0 greatly expands your ability
to add gradient fills to an image. With the new
Gradient Editor dialog box, you can now create
and edit your own custom gradients and save them
for future use. You can specify the starting and
ending colors of your blend and add one or more
intermediate colors to the gradient. In addition,
each gradient contains a transparency mask,
which lets you control the opacity of the gradient
at different points.
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