Photoshop
Interface
Units & Rulers Preferences
In the Units & Rulers Preferences you can specify units of measurement, column specifications, default print and screen resolutions, and point sizes for type.
View a full-sized version of the Units & Rulers preferences.
Units
- Rulers
- This sets the standard unit of measurement used in Photoshop. It will be used for rulers and measurements and is displayed in dialogs and panels such as the Tool Options bar and the Info panel. For web site graphics the best setting to use is pixels since that is the standard unit for that medium. For print work, picas or inches are recommended.
- Type
- This unit defines the type size and is displayed in the Tool Options bar when using a Type tool as well as in the Character and Paragraph panels. The usual setting is points.
Column Size
Column Size is a unit measurement used in the New, Image Size, and Canvas Size dialog boxes. This setting determines the column size used in those dialogs and is helpful in sizing images that will be laid out in columns.
- Width
- This refers to the width of a column.
- Gutter
- The gutter is the width of the space between columns.
New Document Preset Resolutions
The following options set the default resolutions when you open a new document using the File > New command.
- Print Resolution
- This resolution is used in images destined for print output.
- Screen Resolution
- This resolution is used in images that will be displayed on the Web.
Point/Pica Size
The following options set the number of points and picas in an inch and applies to print work.
- PostScript (72 points/inch)
- PostScript is the standard method and should be used unless you have a specific reason to use the Traditional method. PostScript defines a pica as about 1/6 of an inch and a pixel as 1/72 of an inch.
- Traditional (72.27 points/inch)
- This method was used many years ago.
Units & Rulers Preferences Summary
- In the Units & Rulers Preferences you can specify units of measurement, document resolutions, and point sizes for type.
- Units defines the unit of measurement used for rulers, measuring, and type size.
- Column Size sets a default column width used in several dialog boxes.
- New Document Preset Resolutions sets the default print and screen resolutions.
- Point/Pica Size lets you choose a method that defines the number of points and picas in an inch.
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