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Table Of Contents
Chapter 9 Viewing, Printing, and Exporting Your Slideshow 169
m Set the screen refresh rate (the number of times per second that images are updated
on your screen) in the Displays pane of System Preferences. If you use an LCD display,
LCD projector, or DLP projector, try to match the refresh rate of your computer or video
card with the optimal refresh rate of the display device. (Usually this is an issue only if
you are using a VGA-style connection to an LCD or DLP display. CRT devices do not
typically have one optimal refresh rate.)
To change your computers screen refresh rate, choose Apple menu > System
Preferences, click Displays, click Display, and then try different options from the Refresh
Rate pop-up menu.
m If the colors on your display seem “washed out when you connect to a new projector
or if the text appears jagged, you may need to calibrate your display. Open ColorSync
Utility (in Applications/Utilities) to set up color calibration.
Viewing the Same Presentation on Two Screens
Using video mirroring, you can play the same slideshow on two displays or projectors.
You might want to use video mirroring when presenting to a very large audience.
Video mirroring doesn’t enable you to view presenter information on another display.
To do so, see “Viewing a Presentation on an External Display or Projector on page 167.
Some computers have video mirroring built in. If yours does not, you must configure it
in the Displays pane of System Preferences. Some notebook models don’t support
video mirroring.
To view a presentation using video mirroring:
1 Attach the second display or projector according to the instructions that came with the
display or projector and the instructions that came with your computer.
See “Tips for Using an External Display” on page 168 for setup recommendations.
2 Choose Apple menu > System Preferences, and then click Displays.
3 Choose a resolution and number of colors.
Use the same settings for both displays.
4 Click Arrange and select Mirror Displays.
5 Open the Keynote document and click Play in the toolbar (or choose View > Play
Slideshow).
To advance to the next slide or object build, press the Space bar or click the mouse.