Home Video Projector Review
August 5, 2013
Fan Noise - In Eco mode, fan noise is very low, but in normal mode, it is loud enough to be a distraction. It can even be loud enough to overwhelm the PJD7820HD's internal speaker during quiet moments. For a weekend crowd at home, you will probably need to use an external sound system, but this is due more to the weakness of the internal speaker than the fan noise.
Color wheel - The PJD7820HD has a six-segment RGBCYW color wheel. The "W" stands for White, and white segments in DLP color wheels boost white light output but not color light output, leading to an unbalanced picture with super-bright highlights and dull colors. White segments can also increase the appearance of color separation artifacts. And while color wheel speed is not listed in the projector's specifications, most projectors with white segments in their color wheels have 7200RPM (2x-speed) wheels.
No VESA port - Despite being a full HD 3D projector, the PJD7820HD is limited to using DLP Link glasses due to the absence of a VESA 3D sync port. This is common practice on inexpensive 3D projectors, including most of the PJD7820HD's competitors. DLP Link glasses are inexpensive and easy to find, but some folks prefer IR glasses because they, on average, have better black levels than their DLP Link counterparts.
Brightness uniformity - The dimmest corner of the PJD7820HD's image was significantly dimmer than its center, and brightness uniformity measured 67%. While most visible on pure white or pure gray screens, it can occasionally manifest in film and video as well.
ViewSonic has cracked the $800 barrier with a capable HD home video projector. The PJD7820HD is small, light, and at 3,000 lumens it is plenty bright even in living rooms at midday. It does, of course, have its flaws; poor brightness uniformity and a loud fan number among them. Its built-in speaker is underpowered. It does exhibit rainbow artifacts, so those who see rainbows will want to test it out before committing to a purchase. But despite these limitations, the PJD7820HD is an affordable, portable, fully 3D projector that can light up a living room for an afternoon of fun. The PJD7820HD is a capable home video projector, and it is nice to have another inexpensive option to choose from.