The
Best Projection Screen
by Template Ready
There is a wide variety of screens each one with
a choice of projection surfaces. Selecting the
right combination to meet your needs is important
for optimum results.
The following is a guideline for selecting a
screen that suits your application. Although these
recommendations will work in most situations,
each must be looked at not as a strict rule, but
rather as a guideline for determine your actual
needs based on your own situation.
Pick the type screen that best suits your particular
needs. For example, choose form front projection
or rear projection screens in either potable,
wall or ceiling mounted models in either manual
or electric versions. Generally, if your projection
application is permanent, then wall and ceiling
screens are your best choice. If, however, you
find your needs require moving the screen to different
locations then a portable screen is a better alternative.
Determine the optimum screen size based on room
dimensions, planned audience seating size and
arrangement. The rule of thumb is to fit the screen
to the audience-not to the projector.
I recommend the following formula for determining
screen size:
· Screen height should
be approximately equal to 1/6 the distance from
the screen to the last row of seats, allowing
text to be read and detail to be seen in the projected
image.
· Ideally, the first row
of seats should be approximately 2 screen heights
away.
· The bottom of the screen
should be a minimum of 4 feet above the audience
floor, allowing those seated toward the rear of
the audience to see the screen. This may require
additional screen "drop" for ceiling
hung screens.
· Select the appropriate
format for your projection application. Common
formats are as follows
Common Applications and Aspect Ration Width/Height
NTSC Video 1.33
PAL Video 1.33
Letter Box Video 1.85
HDTV Video 1.78
35MM Filmstrip 1.32
2x2 Standard 35MM Double-Frame Slides 1.50
· Choose the screen surface that best
suits your projection and viewing requirements.
If the screen will be used for multiple projection
methods, choose the screen surface that meets
the requirements of the lesser performing projection
method. For example, if using a slide projector
and a video projector, choose the screen surface
for the video projector since its light output
is generally less than a slide projector.
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