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W
P
HITE
APER
(cont.)
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2.
U
N I F O R M I T Y
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the difference between the brightest
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(the middle) and dimmest (the edges)
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points on a screen. When uniformity is
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high, the image brightness is
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equalized from the center to the
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corners. When it's low, you get too
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much light in the middle and not
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enough on the edges. The majority of
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portable projectors today offer a
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uniformity of between only 30% and
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50%, which results in a visibly
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distracting imbalance of brightness
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across the screen. The Compaq
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MP1600 Microportable Projector's
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uniformity is greater than 90%. You'll
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consistently project uniformly bright
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images with no hot spots or faded
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edges.
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3.
R
E S O L U T I O N
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elements used to project an image. Higher resolution settings display more
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information, while lower resolutions cut off various proportions of the image's
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edges. The result is that either more or less of your actual image is displayed.
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There are four widely used resolution measurements starting at VGA (640x480
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pixels) and going up to SXGA (1,280x1,024). However, the optimal resolution for
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presentations is XGA (1,024x768), because it delivers the optimum projected
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image. Only a few portable projectors on the market offer XGA resolution. The
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Compaq MP1600 Microportable Projector is one of them. What's more, unlike
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most other portable projectors, the Compaq MP1600 Microportable Projector has
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state of the art chip set from Pixelworks that employs a scaling algorithm to
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automatically scales your presentation's resolution to XGA from VGA through
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SXGA resolutions. This means that virtually no matter what video resolution your
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computer is outputting, the Compaq MP1600 Microportable Projector will
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automatically scale it to an optimum XGA resolution. Projectors without this
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capability project only partial images, or place black borders around the images to
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fill the space, resulting in a visible image loss.
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VGA (640 x 480)
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Lower resolutions display less information. The Compaq MP1600 Microportable Projector
6
. Uniformity gauges
. Resolution is the measurement of the number of pixels or picture
SVGA (800 x600)
XGA (1024 x 768)
Resolution:
automatically scales to XGA without information loss.
Uniformity
Comparison:
Dark corners
result in
presentations
with lower
uniformity
SXGA (1024 x 768)
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