Commercial Integrator May 2021 - 13

16:9 or about 168 " !
Stop for a moment and as you catch your
breath. I hear you all say that the environment may not accept a screen that large.
There certainly are other factors to consider
in the design such as ceiling height, viewer
positions and gels of view and ambient light.
Of course, the final design needs to
consider all the factors but from a pure visual
acuity perspective the screen needs to be as
close as possible to what the formula tells us.
What we do know is that a 98-inch flat
panel is not big enough unless that is the
largest display you can fit in the space. This
means we should consider projection or
dvLED. Now the three big factors become
resolution, ambient light and price.
The tendency that I spoke about earlier
is to discount projection out of hand and
specify a flat panel. Flat panels are great
but if you need a display that is designed
to provide an image over 98 inches (the
current limitations of a flat panel) then
projection is an affordable alternative to the

more expensive dvLED.
Projection has evolved with higher
lumen light output, solid state illumination
and ambient light rejecting screens (ALR)
that address many of the high ambient light
concerns. Also with projection you pay for
the resolution you need.
Believe it or not, there are a lot of
1024x768 projectors still sold and options
for 1080 and 4K commonly available with
8K no longer just a dream. Take the room
and the viewing distance into consideration
and use a projector with a zoom lens and a
properly sized screen for as near a perfect
fit as you can get.
It does not have to be 65, 75, 86 or 98
inches unless they are the best fit for your
design and application.
The fact is that with the advent of larger
flat panel displays, many in AV design have
been unwittingly under sizing images and
not paying enough attention to viewing
distances, both in terms of visual acuity and
overall screen real estate.

You can take a smaller screen than is optimal and adapt the content by increasing its
size (zooming in on a photo or increasing
font size) to attempt to compensate for
visual acuity, but this negates overall screen
size allowing for increased information on
screen at the same time.
Consider working within a presentation
slide sorter, where I need to not only read
one slide, but several at once. The point of
this article is to place a stake in the ground
that display size matters. If a flat panel
works then use it-if the image is above 98 "
then consider projection (or dvLED if the
budget permits).
This all boils down to what we preach in
the industry as good design. By showing
our end users what we know and why we
know it, this adds value, your value and
they will come back for more.
Alan C. Brawn, CTS, ISF, ISF-C,
DSCE, DSDE, DCME, is the
principal of Brawn Consulting.

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commercialintegrator.com

CM2105 pp12-13 Brains and Brawn.indd 13

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MAY 2021

Commercial Integrator

4/12/21 10:29 AM

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Commercial Integrator May 2021

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