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In
Sight: The
Quest for
High
Fidelity
Video
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Michael
Levy |
| 10
February
2002 |
Las
Vegas, Nevada,
January 2002, The
Consumer
Electronics Show,
C.E.S., you can
never get tired of
flying into this
town at night. The
size, variety, and
impact of the
lights have grown
every year. No
pinball machine or
computer game
could compete. It
is an
entertainment
Mecca based on
gambling where
nothing is too
showy or flashy.
Like television,
or the Internet,
this city has
decided that
rather than making
you fly to New
York, or Paris, or
Rome, they would
bring it to you.
Where better to
have a convention
for the hardware
that brings it all
into your home at
your leisure. They
can even take you
to the future or
the past.
This is my 24th
year at C.E.S., I
remember when the
main show was in
the summer at
Chicago, and Las
Vegas was the new
show, before
computers, cell
phones, the DVD,
or even the CD. I
was there when
high-end audio was
the darling of the
show, when being a
purist for natural
reproduction was
not equivalent to
being related to
Tyrannosaurus Rex.
The Stereotimes
has asked me to
author a new
department for the
magazine devoting
the same purist
point of view we
have in audio to
the home theater
environment which
I find quite
exciting. This
encompasses far
more than just
video, and has
little to do with
television, as
most people know
it. There were
many impressive
new products at
the show, but
creating a good
home theater is
about choosing the
right product for
the right
application. I
hope I can help
the reader better
understand what is
involved in
bringing the
theater to the
home, and how to
choose the best.
And what was new
at the show? Oh
just the DVDr,
larger and better
plasma screens,
better and less
expensive video
processors,
smaller cheaper
and better DLP
projectors, and
the best image
ever shown at any
show, possibly
anywhere, at any
price (and what a
price!). That was
just the visual
imaging side of
home theater, and
quite enough for
this article.
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The
unanimously most
dynamic, three
dimensional and
detailed image
went to a
$75,000.00
projector with a
rated output of
under 240 ANSI
lumen, the
Accurate Imaging
9X. Accurate
Imaging is a new
company formed by
James Wellnitz,
formerly the
president of
Vidikron of
America, and Bob
Rosser, of
Ultimate
Entertainment.
Their new cabinet
design houses the
same engine used
by several
companies
including Vidikron
and Madrigal, but
with hundreds of
changes
internally. They
had it coupled
with a $45,000.00
Teranex processor.
You could also
spend $10,990.00
for a Sharp DLP
and get a very
nice 800 ANSI
lumen image.
That's more than
three times the
brightness for
less than one
sixth the cost. It
is like talking
about candles in
relation to
halogen bulbs, and
the comparison
would hold if you
were talking about
light bulbs. But
the 240 ANSI lumen
image looked
brighter and more
three-dimensional.
How could it look
brighter you ask?
It is all in how
the eye sees. I
don't believe that
light output is
any relative
measure of a
projector on an
absolute scale.
The proof was the
reaction I saw to
the images
displayed at C.E.S.
We know, for
example, that the
ear hears
logarithmically.
That means it
takes ten times
the power to
double the
perceived volume.
The same is true
of the eye. It
takes ten times
the lumens to
double the
perceived
brightness. But
the eye has one
more factor that
comes into play,
the iris. The iris
raises and lowers
the threshold
level for sight by
opening and
closing. Thus our
eyes accommodate
the overall
brightness level.
There is a minimum
level of light the
eyes need, and a
level that is too
bright, but
between those two,
other factors come
to play. If a 240
ANSI lumen image
appeared brighter
than an 800 ANSI
lumen image, there
must be other
factors that
effect perceived
brightness.
With the DVD as
the preferred
source for the
home theater,
digital artifacts
can be created in
the recording
process, or at
playback by the
video processing.
A digital display
device such as a
plasma screen, DLP,
DILA, or LCD, is
constantly
processing the
signal in ways
that can degrade
image quality.
There are
differences in how
often and how
directly each
pixel is accessed
and how many
possible shades of
color can be
produced. There
are mechanical
differences that
can limit black
level, the primary
colors used and
the output
spectrum of the
bulb come into
play. In fact
there are so many
factors in the
design of a video
display device
that it takes a
specialized
professional with
the proper
experience to
understand.
What does that
mean for the
enthusiast who
wants to
understand how to
choose the right
product? Display
devices are often
designed with
inaccuracies
purposely
inflicted on the
image in order to
wow the viewer
with a certain
effect that may
make some images
seem better, but
to the detriment
of other images,
and causing an
overall
inaccuracy. Now,
you may ask why
someone would want
anything but an
accurate display.
The answer is
marketing. A
product must be
able to
differentiate
itself from its
competition. In
the sales
situation, the
image that stands
out the most will
get the most
attention. To
achieve the most
dynamic image, the
manufacturers
design
inaccuracies into
the image that
make it stand out
on the sales
floor. The problem
is that it is
often impossible
to remove those
inaccuracies even
for trained
technicians with
access to the
service sub menus.
Without testing
against the
reference, I
cannot attest to
the accuracy of
any TV, Projector,
or flat panel
device.
In video, there
always exists a
reference to
compare to. If the
reference is a
film source, there
is a master film
to reference to.
If the reference
is video, there
are exact
standards on how
to accurately set
the display
device. These
standards have
been addressed by
Joe Kane in his
famous laserdisc
"A Video
Standard" and
the following DVD,
" The Video
Essentials",
and by The Imaging
Science
Foundation, which
he founded with
Joel Silver.
Still, I find that
most display
devices have
inaccuracies built
in for marketing
purposes, and can
only be brought
closer to the
reference, but
will never be
absolutely
correct. Where
they stray from
absolute accuracy,
I will try to help
the reader
understand what
that means to the
image.
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How
would this apply
to the products
displayed at
C.E.S. for
example? Let's
compare the
$75,000.00
($120,000.00 with
the Teranex
processor) image
from Accurate
Imaging with the
$10,990.00 image
from the Sharp
XV-Z9000U DLP.
While the Sharp
created a very
acceptable image
that had good
detail and depth
with decent blacks
and good color
accuracy, it was
totally outclassed
by the Accurate
Imaging 9X. Pixels
were visible from
normal viewing
distance on the
Sharp and gray
scale was limited
making individual
images appear
flat. Small
details were
blurred in motion,
and the color
spectrum leaned
toward blue. The
Accurate Imaging
9X excelled in
depth of field
(small images were
clear even in
motion and
retained their
individual three
dimensionality).
Each image was
clear, fully
detailed without
harsh edges. DVD
sources looked
like what you
would expect from
a high definition
source, and true
HD looked like you
had opened a
window. You could
not see lines, or
pixels, or any
evidence on the
screen that you
were not looking
at film, except
for the rare 1
line thin image
that would dither
between lines, and
that was only
visible when you
were inches away
from the screen. I
would rate each of
these products at
the top of their
price class. Sharp
expects to update
their model later
this year. The new
model will sport
the new black
metal high
deflection
micromirror chips
from Texas
Instruments for
greatly improved
contrast ratio,
and a lower price.
The Sharp display
was on the main
floor in the
Convention Center.
They had two
theater displays,
and several
external displays
with their plasma
units and
projectors. My
interest is in
product for the
home theater, and
it seems that
Sharp has decided
to address the
home theater at a
fairly high level.
They are at the
edge of consumer,
almost into the
high-end
stratosphere. Both
of their theaters
were very
impressive. They
used their HD DLP
in each case for
the video, but
they were also
displaying their
new one bit
amplifiers and
surround processor
with a B&W 802
system in one
room, and a Legend
Audio speaker
system in the
other. Both rooms
sounded and looked
great! They were
both about as good
as home theater
can get without
mortgaging the
house. This is the
most important
point. I have a
simple rule for
pricing product
for home theater
as it approaches
the state of the
art. Simply put,
ten times the
price brings you
half the distance
between where you
are and
perfection. This
is the law of
diminishing
returns. The trick
is to get the
maximum quality
level before the
law makes the
price
unreasonable.
Sharp displayed an
excellent
price/value ratio.
The show
demonstrations of
DLP projectors at
Plus,
Seleco-Sim-2,
Infocus, Runco,
and Dwin all had
flaws that caused
the images to be
less acceptable
than what I saw at
Sharp. I must
point out that I
cannot make
definitive
statements about
any of these units
until I have one
for review.
I found the Plus
Piano HE-3100 the
most interesting
new product. This
projector was
premiered at the
CEDIA show. This
is a cute little
box that can sit
on your coffee
table. It is very
quiet, and has a
short throw
distance. It
sports a DLP chip
with 848 by 600
native resolution,
450 ANSI lumens,
and a 700 to 1
contrast ratio.
With a list price
of under
$3,000.00, and
picture quality
that could compete
with much more
expensive
projectors, this
was definitely the
best buy at the
show. The color
accuracy, depth of
field, black
level, detail in
motion, and
relative lack of
digital artifacts
put this projector
in competition
with much higher
priced product.
They have laid
down the gauntlet
and I believe the
industry will soon
respond with
competitive
product.
Infocus premiered
their new small
home theater
projector
featuring the 848
by 600 DLP chip,
the Screenplay
110. While its
light output
specification is
much higher at
1000 ANSI lumens
and it is using
the Faroudja video
processing chip
set, the picture
quality was
slightly better
than the Plus
Piano at $2,000.00
more. The Infocus
is far more
flexible and
accepts high
definition sources
through the 15 pin
D-sub input. It
would be preferred
for larger screens
where higher light
output is needed.
Infocus expects to
premier a 1280 by
720 unit this year
for under
$8,000.00, with
higher light
output than the
Sharp XV-Z9000U.
I could not get
the time in my
four days at the
show to get enough
experience with
any other products
to evaluate them.
There were new
rear projectors,
both CRT and
digital (DILA,
LCD, DLP) from
JVC, Panasonic,
Thompson, and
Pioneer.
Mitsubishi showed
a 9-inch CRT rear
projector with
both satellite and
terrestrial
receivers on
board. Faroudja
showed a new
processor with a
DVD drive
digitally
interfaced
internally.
I expect to get
some of these
products in for
evaluation soon,
and my next
article will
detail more of
these new
products. They are
numerous, and they
each advance
quality and
features in their
own way. I expect
it to be an
enlightening
adventure.

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