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Optoma H79
Home theatre Projector
Specifications. 1000 ANSI lumens, 4500:1 contrast, native
16:9 widescreen format, 1280x720 resolution DLP chip with a 5x
eight-segment colour wheel.
Compatibility. HDTV 1080i, 720p, 576p, 576i, 480p, 480i, and
computer resolutions up to UXGA (1600x1200). Full NTSC / PAL / SECAM.
Lens and Throw Distance. 1.35:1 powered zoom/focus lens. Throws a 100" diagonal image from 11'7" to 15'7", depending on zoom.
Lamp Life. 3,000 hours.
Connection Panel. One composite video, one S-Video, One set
of standard YPbPr component video inputs, one set of 5 BNC component
inputs that support YPbPr/RGB, one DVI-I port with HDCP, 2 12V relays,
and one D-sub 15-pin RS-232 port.
Installation Options. Table mount, rear shelf mount, ceiling mount.
Performance
As a general rule, a good video-optimized home theatre
projector will output somewhere in the neighbourhood of 300 to 500 ANSI
lumens, regardless of that unit's stated lumen rating. The H79 comes in
at the high end of this spectrum, outputting 450 ANSI lumens at
video-optimized settings. If this is not enough light for your needs,
enabling "britemode" (essentially, high lamp mode) boosts lumen output
to nearly 600 ANSI lumens. With this kind of power, very large screen
diagonals - larger than 120" - pose no problem for the H79.
Contrast on the H79 was nothing short of astounding – black
level is the best we've seen short of a CRT projector. Shadow details
are open and well-defined, and there is no crushing of the grayscale on
either end of the spectrum.
One of the benefits of the new DarkChip3 is that the space
between actual mirrors on the chip - the inter-pixel gap - has been
made smaller. Furthermore, the black dot in the middle of each pixel
mirror is gone. These improvements eliminate visible pixelation
entirely and produce an exceptionally smooth, well-integrated image.
You can go with larger screen sizes and sit closer to the screen than
ever before without any distraction from pixel definition.
The H79 also uses an eight-segment colour wheel that
contains two dark green "Dark Video Enhancement" segments, rendering
shadow areas of the image are nearly free of dither. In point of fact,
the entire image is about as clean and stable as we've yet seen on a
digital projector.
colour out of the box wasn't quite accurate – the projector
was biased towards green, and reds seemed oversaturated. While it takes
a fair amount of fine-tuning to get the H79's colour performance right,
it is impressive once it reaches its peak. colours have excellent
saturation, flesh tones are realistic, and the image almost seems to
pop off of the screen.
The H79's de-interlacing and scaling is top-notch. When
compared to a quality progressive-scan DVD player, we saw no loss of
quality when we switched the DVD player back to outputting an
interlaced signal and let the H79 do the heavy lifting. Furthermore,
the DVDO iScan HD video processor did not contribute any incremental
image acuity compared to the H79's internal processing.
With high definition 720p, the H79 looks truly amazing, as
you'd probably expect – after all, this is what the projector is built
for. 1080i still looks slightly softer in comparison due to scaling,
but is still sharp, clean, and stable.
We fed the H79 a composite signal from a video game system
in order to see how the H79 deals with inferior signals. While image
quality is compromised with a composite signal, it was surprisingly
watchable in most cases. However, when we switched to component cables,
the difference was refreshing. If you plan on using a video game system
with your projector, invest the £20 in a component cable adapter for
your system. That £20 is the difference between a large image and a
large high quality image.
Feature Set
The H79's 5x speed, 8-segment colour wheel will ensure that
very few people susceptible to colour separation artifacts will still
see them on this projector.
This unit has a powered zoom and focus lens, with a 1.35x
zoom range. While quite convenient, it may be of limited usefulness in
a permanent theatre set-up if you are using a 16:9 screen. However, it
supports a unique installation option for those who like very large
scale 4:3 presentation. You can install a 4:3 screen, and set the H79
to fill it side-to-side with a 16:9 image. Then if you want to go very
large format for something like Gone with the Wind ,
which is a 4:3 film, you can use the power zoom to fill the 4:3 screen.
Practically speaking, this installation option is only available with
projectors that have powered zoom lenses and a zoom range of at least
1.33x, and the H79 is one of the few that do.
Mounting the H79 is a snap with the unit's vertical lens
shift. The lens shift allows for two full screen heights of leeway – so
for a 100" diagonal image (49"x87") the picture can be placed
vertically anywhere within a 98" range. However, the lens shift has no
incremental offset, meaning that at the ends of the vertical lens shift
range, either the bottom edge or the top edge of the projected image
intersects the centerline of the lens. While this makes rear shelf
mounting particularly easy, some tilts and associated keystone
adjustments may be needed to accommodate coffee table or flush ceiling
mounting.
The H79 features both horizontal and vertical keystone
adjustment to compensate for off-angle mounting arrangements. While
this is useful if something prevents you from mounting your projector
horizontally or vertically centered, it is still preferable to avoid
off-axis mounts when possible. The H79 performs most keystone
adjustments cleanly, but HD 720p signals in particular will need to be
scaled rather than displayed in native format, which eliminates the
benefit of feeding the H79 a signal in its native resolution.
Furthermore, use of radical keystone adjustments will reduce light
output on any projector, and this one is no exception.
Optoma's remote is distinctive, with a bright blue backlight
that fades away after a few seconds of inactivity. The buttons are
large enough to be easily found, and there are direct access buttons
for each source, an aspect ratio menu, the powered zoom and focus, some
basic video adjustments (brightness / contrast / colour), and
horizontal and vertical keystone. This may sound like a crowded remote,
but Optoma has managed to keep clutter to a minimum by having some of
the buttons function differently when the menu is open.
The menu system itself is similar to that used in other
Optoma home theatre projectors, and is simple to navigate. The H79 has
several included colour profiles to cut down on necessary calibration,
as well as several gamma settings. Gamma is changed via a sliding
control, and the settings are not named.
colour temperature is adjusted via three preset values,
simply numbered 1 through 3. Straight out of the box, these measured
5200K, 6200K, and 7700K. There are no independent colour temperature
adjustments, so the three settings are linked together - for example,
if you were to calibrate setting number 2 to 6500K, setting 1 would be
warmer while setting 3 would be cooler. This can prove useful if, for
instance, you prefer to watch black and white films at a warmer
setting, and play video games at a cooler setting.
Finally, colour can be fine-tuned via individual red, green, and blue contrast and brightness settings (gain and offset).
The H79 is housed in a somewhat utilitarian large white
case, which manages to avoid being unforgivably boring only by the
barest of margins. However, this case does serve multiple purposes.
White is often the preferred colour for those ceiling mounting against
a white ceiling, as it causes the projector to be somewhat invisible.
And the larger form factor houses a unique sound damping system that
brings the noise rating down to 23dB – there were several occasions
while the lamp was warming up when we weren't sure if the projector had
turned on or not, since we couldn't hear it.
Fan exhaust is diverted back and to the right through an
exhaust vent, so there is no chance that exhaust will interfere with
the light path from the lamp to the screen. Errant light was nearly
nonexistent, and will not pose any distractions.
Conclusion
It was quite an effort to write this review, since the
reviewer's job is to find the flaws, and there simply weren't many
flaws to be found. Optoma has produced a beautiful projector that
delivers an exceptional image for the money. It is easy to use and
offers a lot of installation flexibility. If you are looking for truly
high-end performance at a terrific price, do not miss the chance to
audition the Optoma H79.
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