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ViewSonic PJD7820HD Projector ViewSonic PJD7820HD
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Street Price: n/a
3D: Full HD 3D
Weight: 4.6 lbs
Aspect Ratio:16:9
Color Wheel:6 segments
Lens:1.3x manual
Lens Shift:No
Lamp Life:4,000 Hrs
6,000 (eco)
Lamp Cost:$329.00
Warranty:3 year
Connectors:  S-Video, Composite, VGA In (x2), HDMI, USB, RS232
Video Formats:  480i, 480p, 720p, 1080i, 1080p/60, 576i, 576p

Viewsonic PJD7820HD
Home Video Projector Review

Allan Abbott, August 5, 2013

Key Features

Presets - The PJD7820HD features seven Color Mode presets: Brightest, PC, Dynamic PC, ViewMatch, Movie, Dynamic Movie, and Gaming. The Dynamic variants sense room brightness and image content and adjust the image based on those parameters to give some of the effect of an automatic iris without the mechanical noise. There are also two User Modes which allow various picture adjustments not available in the other Preset Modes.

Connectivity - The rear panel connectors of the PJD7820HD include dual VGA connectors, an S-video input, an HDMI input, composite video, a VGA output for driving an external monitor, a USB-B input, and various audio inputs and outputs. Additionally, there is an RS-232 connector for serial connections.

Placement Flexibility - With an optical zoom of 1.3:1, the PJD7820HD offers a range of placement options to accommodate room sizes and audience seating configurations.

Heat Exhaust - ViewSonic put the exhaust vent for the PJD7820HD on the right front portion of the chassis. This means that exhaust fan noise is directed toward the front of the room and does not distract audience members seated behind the projector.

Dynamic Eco Mode - This feature reduces power consumption by lowering brightness by about 80%, but it is of limited utility in bright rooms where image washout is likely. Still, this feature is useful for movie viewing in darkened rooms where maximum brightness is not required.

Full HD 3D - The PJD7820HD has full HD 3D compatibility, so you can connect it to a Blu-ray player or broadcast 3D source and it will display that content correctly. If you have any frame sequential 3D content, the PJD7820HD can handle it as well. 3D viewing requires the use of special active-shutter DLP Link glasses, which are not included with the projector. Image brightness is decreased significantly and many color adjustments are not available in 3D mode, but these are common restrictions found on many 3D projectors.

Lamp Life - Normal mode lamp life is 4,000 hours, but Eco mode stretches that time to 6,000 hours -- which is one of the longer lamp lives available for a 3,000-lumen projector. And since Eco mode only drops brightness by 18%, it is an excellent choice if room light permits.

Maintenance - Like many DLP projectors, the PJD7820HD has no air filters to be replaced, but it is recommended that the intake and exhaust ports be vacuumed occasionally to remove and dust or lint that might collect there. Lamp replacement is performed through the top of the projector, so lamp changes can be performed on ceiling-mounted projectors without dismounting the projector.

Warranty - The PJD7820HD offers a three-year warranty, with a one-year warranty on the lamp and a year of express replacement service. This is better than many competing projectors in the sub-$1000 category.

Review Contents: The Viewing Experience Key Features Performance Limitations and Conclusion

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Reader Comments(6 comments)

Posted Mar 4, 2015 1:33 PM

By ananth

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hi team

I am the current user of ViewSonic XGA DLP Projector...looking for upgrade into FullHD+3D ....still confused with this one and Optoma HD141X Full 3D 1080p .....dont which one is better in Picture quality wise.....

Posted Apr 2, 2014 6:42 AM


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This only applies to 24hz 3D Viewing... Like Movies or LOW Frame rate PC Gaming... 24Hz

The Benq W1080ST/W1070 Have the X3 "Triple Flash" THIS gives them the total Refresh rate of 144Hz. - This only Applies to Games/Movies that are in 24Hz Resolution/Format -

24Hz X 3 Times (Triple Flash) = 72Hz/Per Eye = 144Hz Total Refresh Rate. - The Acer H6510BD is as follows - 24Hz X 2 Times (Normal double Flash) = 48Hz/Per Eye = 96Hz Total Refresh Rate.

This is how I figured it out. Seems that 144Hz only matters for 24hz 3D-Blueray Movies.

Posted Sep 30, 2013 9:09 AM

By Jose

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I have an HD23 and I'm looking foward to buying a 3D projector. I have noticed some Rainbown effect with the HD23 and althrough I have already get used to it I would like to get a projector that would give me less rainbown effect than the HD23. I use the HD23 on my living room and today I can use it to play videogames during the day, with closed windows. I have two projectors in mind: The PJD7820HD and HD131Xe (or Even the HD25). Which of these projectors creates less rainbow effect? Thanks

Posted Sep 6, 2013 1:45 PM

By gary

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Can this projector PJD7820HD hang from the ceiling upside down and ready for ceiling mount? Have reversing capability.

Posted Aug 24, 2013 6:13 PM

By Gray

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Is the 3D refresh rate 144Hz or 96Hz? Trying to decide between this and the Acer H6510BD

Posted Aug 19, 2013 11:39 AM

By spspspspsp

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What about the lumens in 3d mode? You nice folks at ProjectorCentral measure it for other projectors. I would love your technical comparison against the Optoma HD25/LV.

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