Selecting the Right Projector Screen Size

The Projector Screen Experts at Big Screen Center put together a terrific article on choosing the right projector screen size for a room. The article goes into detail about the math involved selecting a projector screen that is proportionate to the room.

Feel free to browse the full text article on Squidoo.com: How to Pick the Right Projector Screen Size

Three Keys to the Right Screen Size

1. Projector Native Resolution lets you know which aspect ratio to select for your screen . What is the native resolution of the projector that you have?
2. Ceiling Height allows you to determine the screen height that will fit gracefully into a room. What is the ceiling height of the room that you are outfitting?
3. Screen Distance to Audience. The people sitting farthest away from the screen determine the minimum screen width. A screen should be at least as wide as 1/6 of the distance between the screen and the viewer farthest from the screen. How far away will the viewer be sitting?

With answers to these questions, you can estimate an appropriate screen size for a given room.

First, we want to look at the native resolution (aspect ratio) of the projector being used in the room. This will help you determine what screen format you should use. Most all projectors nowadays will do both 4:3 and 16:9 aspect ratios. Projectors with 16:9 aspect ratio, like these available at Big Screen Center, are designed for playing High Def movies in home theater settings.

As shown below, a projector with a native 16:9 aspect ratio can letterbox to show a smaller image in 4:3 format. You will want to go by the native aspect ratio in order to get the biggest and best picture.

Second, we will want to look at the ceiling height in the room. A screen should be at least 1 ft. down from the ceiling and 3 ft. up from the floor. For example, in an 8 ft. room, a screen should be 4 ft. high at the most. If the room has a slanted ceiling, the screen should be placed at least 1 ft below the ceiling at the point where the screen is going to be installed. This rule of thumb gives you a screen that is gracefully proportionate to the wall and the room. This is especially true for classrooms, boardrooms, and conference rooms where people will be sitting in front of one another.

If you are mounting your projector to a central location on the ceiling, you want to mount the projector so that it is even with the top of the the screen. Now this rule of thumb is for a maximum screen size. It is OK to go smaller. People tend to focus on what they can see in the center of their field of vision. A person’s gaze tends to travel from one portion of the screen to the next when the screen is too big (or the person is sitting too close) to see it all at once. You don’t want your audience to get tennis neck.

Finally, we need to look at the distance the audience will be sitting from the screen. If the screen is bigger, people can see it from further away. For auditoriums, conference, and boardrooms the width of the screen should be no less that 1/6 the distance of the farthest spectator in the audience. For example if the back row of an auditorium is 48 ft. away then the width of the screen should be at least 8 ft. wide. This rule of thumb is for minimum screen size. It is OK to go larger. The important thing is to get a screen that is large enough for the audience in the back row to view comfortably.

Enjoying the Finished Installation Makes It All Worth While

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Example: Applying the Projector Screen Size Rules of Thumb

Projector Resolution. I will pretend I have a Panasonic PT-AE2000U projector, 16:9 aspect ratio for playing Hi-Def movies in a home theater. That means I should use a 16:9 HDTV format screen to get the biggest and best picture.

Ceiling Height. My ceilings are 8 ft. high. So my screen should be 48 in. high at the most. That means the largest screen I can fit in my small home theater is 92 in. diagonal 16:9 HDTV format (45 in. H x 80 in W).

Distance from Screen to Audience. If I prefer a smaller screen, the rule of thumb that screen width is based on the distance between viewer and screen offers some guidance. For example, if I set up the couch 10 ft. or 120 in. away, then the screen should be at least 20 in. wide (1/6 of 120 in.). That means a screen that is anywhere between 20 in. and 80 in. wide with a 16:9 aspect ratio will fit in my home theater.

Remember these rules are just a guide. It is important to have a clear idea of how the screen will fit with architectural features at the installation site. Discussing the screen installation with a knowledgeable professional like the experts at Big Screen Center (1-800-314-8955) may help clarify details of the the project.

Projector Screens Can Harmonize with Architectural Features – Like Stained Glass Windows

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For example, a screen is the right size by the numbers might overlap some architectural feature like a window or door frame. In this case, it really helps to plan your purchase with someone who knows all the right questions to ask up front. Knowing your screen will be the right size the first time can save money and time up front.

We had a customer call in recently who had planned to install a screen between two windows but had not included the width of the window frame in his measurement of the distance between the two windows. The measurement was 80″ from windowpane to windowpane. The window frames were 2″ wide. That means that a 60″ x 80″ screen would have the viewing area exactly flush with the glass of the windows completely hide the window frames on both sides.

That’s OK for a manual or electric screen mounted to hang in front of the window frames. However a fixed frame screen designed to mount flush to the wall would be crowded out of position by the window frames. Sometimes it helps to work with a professional.

Big Screens Come in Small – And Long – Packages

Photo Courtesy of HomeTheaterBlog.com

It would be worthwhile to ask your sales rep about the size of the shipping carton the screen arrives in. Once you know the carton measurements, before you buy, check to make sure the screen carton will fit through the door into the room where it will be installed. For example, one reason the 108″ LCD television never caught on is because it is too large to fit through the doorway of a conventional house and turn down a 3′ hallway.

Sharp 108″ LCD Television – Towering over the Consumer Electronics Show in Las Vegas

Photo courtesy of Sharp and Foxnews.com

Measure any doorways, hallways, stairwells that the projector screen carton would have to pass through from the place it leaves the delivery truck to the place it should be installed. Do your best to measure or imagine how the carton would fit through. If the package is too long to fit through the door and around all the corners, check to see if there is a window that can open to let it through. Or get creative. As a last resort, it may be appropriate to consider a smaller size.

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