Adobe Photoshop CS4 - Manual (Page 44)

37 USING PHOTOSHOP CS4
Workspace
Last updated 1/10/2010
Dragging to create new ruler origin
More Help topics
“ Use snapping ” on page 40
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 panel 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 panel show the following information:
• The starting location (X and Y)
• The horizontal (W) and vertical (H) distances traveled from the x and y axes