Adobe photoshop cs2 Benutzerhandbuch

The Canvas Size command lets you add or remove work space around an existing image. You can also use the
command to crop an image by decreasing the canvas area. In ImageReady, added canvas appears in the same color
or transparency as the background. In Photoshop, there are several options for the background of the added canvas.
If your image has a transparent background, the added canvas is transparent.

Choose Image > Canvas Size.

Do one of the following:

Enter the dimensions for the canvas in the Width and Height boxes. (Photoshop) Choose the units of 
measurement you want from the drop-down menus next to the Width and Height boxes. 

Select Relative, and enter the amount by which you want to increase or decrease the size of the canvas. (Enter a 
negative number to decrease the size of the canvas.) 

For Anchor, click a square to indicate where to position the existing image on the new canvas. 

(Photoshop) Choose an option from the Canvas Extension Color menu: 

Foreground to fill the new canvas with the current foreground color 

Background to fill the new canvas with the current background color 

White, Black, or Gray to fill the new canvas with that color 

Other to select a new canvas color using the Color Picker 

Click OK.