Adobe Photoshop CS3 Manual de usuario Pagina 49

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PHOTOSHOP CS3
User Guide
42
See also
“Use snapping” on page 45
Change the unit of measurement
1 Do one of the following:
Double-click a ruler.
(Windows) Choose Edit > Preferences > Units & Rulers, or right-click the ruler and then choose a new unit from
the context menu.
(Mac OS) Choose Photoshop > Preferences > Units & Rulers, or Control-click the ruler and then choose a new
unit from the context menu.
2 For Rulers, choose a unit of measurement.
Note: Changing the units on the Info palette automatically changes the units on the rulers.
3 For Point/Pica Size, choose from the following options:
PostScript (72 points per inch) Sets a unit size compatible for printing to a PostScript device.
Traditional Uses 72.27 points per inch, as traditionally used in printing.
4 Click OK.
Specify columns for an image
Columns help you position images or elements precisely. The New, Image Size, and Canvas Size commands let you
specify image width in terms of columns. Using columns is convenient when you plan to import an image into a
page-layout program, such as Adobe InDesign®, and you want the image to fit exactly within a certain number of
columns.
1 Choose Edit > Preferences > Units & Rulers (Windows) or Photoshop > Preferences > Units & Rulers (Mac OS).
2 Enter values for Width and Gutter.
Position with the Ruler tool
The Ruler tool helps you position images or elements precisely. The Ruler tool calculates the distance between
any two points in the workspace. When you measure from one point to another, a nonprinting line is drawn, and the
options bar and Info palette show the following information:
The starting location (X and Y)
The horizontal (W) and vertical (H) distances traveled from the x and y axes
The angle measured relative to the axis (A)
The total length traveled (D1)
The two lengths traveled (D1 and D2), when you use a protractor
All measurements except the angle are calculated in the unit of measure currently set in the Units & Rulers preference
dialog box.
If your document has an existing measuring line, selecting the Ruler tool causes it to be displayed.
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