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Chapter 6. Overhead Projector > Setting Up the Room

Setting Up the Room

The Projector

Arrive early and get to know the projector. Have you seen speakers in the midst of their presentations searching awkwardly for the on/off switch, or putting transparencies on the stage upside down and inside out? (Transparencies go on the stage exactly as you would place them for yourself if you were going to read from them.)

Set up the projector in the most advantageous place:

  • where you, its operator, can be seen by the most possible people

  • where its image fills the whole screen

  • where the projected image is a suitable size for your audience

Make sure the projector doesn’t obstruct anyone’s view. Sometimes the best way to remedy this problem is to put the projector on a low stand.

Sometimes light “leaks” around the edge of your framed transparency, projecting a distracting bright line around your projected image. You can remedy this by laying a piece of masking tape right on the glass of the projector’s “stage”—the platform where you lay your transparencies.

The Screen

The bottom of the screen should be at least four feet above the floor.

Consider putting the screen in the corner and angling it towards the center of the room.

When an overhead projected image is thrown onto a flat screen, there is a keystone effect. It means a rectangular transparency looks like this:

The further the projector is from the screen, and the larger the image, the more distortion there will be. If keystoning bothers you, you can buy a metal extender from your local audiovisual supplier that holds the top of the screen out, reducing keystoning.



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