Projector Expert White Paper Series:
Projectors 101 —Educate Yourself About Projectors
©2011 Optoma Technology, Inc.
7
When choosing a projector, aim to buy a product that is best suited to your most-
often chosen activities, such as sharing business presentations, watching movies
or playing games. When using your projector, optimize the light in the room to
the brightness of your projector. Brighter rooms need a projector with higher
lumens. For dark rooms, 1000 to 1200 lumens should be sufcient, although
often classrooms and conference rooms need 2500 lumens or more. In addition,
if you are projecting large images clearly, you’ll want a projector with a higher
brightness rating. When choosing your projector, consider your application, the
size of your group, the size of your room, the screen size and the amount of light
in the room.
HOW MANY LUMENS DO I NEED?
LUMENS WHO SHOULD USE THIS?
500 or less On the go, small groups
700 to 1000 Budget conscious, small groups of ve to 10 people
1000 to 2500 Normal business and classroom use, as well as home theater, groups of ve to 15
2500 to 4000 Projecting in conference rooms and classrooms
4000 lumens and up Large conference rooms, auditoriums, concert halls, bars, nightclubs, churches and
other large venues
What Resolution Do I Need?
Resolution is the term used to describe the number of pixels, used to display
an image. Higher resolutions, meaning that more pixels are used to create the
image, allow you to display more information (greater detail) on your screen
and create a crisper, cleaner image. Today, you’ll see a number of possible
resolutions: SVGA (800x600 pixels), XGA (1024x768 pixels), WXGA (1280x800
pixels), 720p (1280x720 pixels), 1080p (1920x1080 pixels) and WUXGA
(1920x1200 pixels). You can see this is a broad range of resolutions with the
number of pixels used ranging from 480,000 up to 2,304,000.
For entry-level presentations, 800x600 pixels may be sufcient, but for other
uses (such as larger images or advanced presentations) you’ll want a higher
resolution, such as 1080p. The highest resolutions may be needed for presenting
detailed autoCAD drawings, photos or video. Some notebook computer users
may want to choose a projector that supports widescreen resolutions.
Up to 300” with a High Brightness Projector
Up to 180” with a Standard Projector
50”–70” with a Flat Screen TV
Image Size Comparison
1 5
2
4
4
800 x 600
1024 x 768
1280 x 800
1920 x 1080
1920 x 1200
Frame Packing
3D Television
Frame Sequential
Side-by-Side Checkerboard
LEFT PIXELS RIGHT PIXELS
INDICATES BEST 3D VIEWING POSITION
Higher Resolutions Provide Large Images
High-resolution projectors are capable of
showing greater picture detail than low-
resolution projectors. At higher resolutions,
the image contains more pixels and each
pixel is smaller, so that the pixels become
much less visible on the screen.
(18 paginas)
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