First of all, we're looking at a 1080p resolution projector in a price range dominated by lower resolution 720p and WXGA projectors. That alone gives this Viewsonic projector a big advantage in sharpness and readability compared to most of the competition.
The first images are a close-up and full shot of one of our test images. In the close-up you get a good look at how the PJD7822HD handles small and medium sized type. And not just black on white (which is easy), but the reverse and also color on color (the hardest). Also be sure to observe the sharpness of all the small text in the tool bars. Keep in mind that in business presentations, such as powerpoint, 24, 36 and larger point type is usually used. Body text type is rarely below 18 points. As you can see 10 point type is nicely readable. That's about as small as anyone uses, and that would be more for workgroup type presentations using spreadsheets or Word type documents, with everyone sitting just a few feet from the screen. For presenting in rooms where people sit anywhere from front to back of the room 18 point should be the minimum used.
That's followed by some screen images using a browser. Again, everything small is very readable, nicely sharp. Note that the projector may be 1920x1080 resolution, but the images here are put up using my MacBook Pros' lower res 1440 wide display
Understand, that these lower cost projectors obviously do not spend the big bucks on their optics. Most projectors anywhere near the price range of this Viewsonic do not use glass lenses, or at best, perhaps a mix of glass and plastic elements. No matter, the bottom line is: Does the projector produce a sharp image? Yes.
After those images, are four taken off of HDTV. Those are 1080i broadcasts from DirecTV so we're capturing only one of the two interlaced frames, thus resolution is slightly lower at 1920x540, rather than the 1080p images below those, which are captured 1920x1080 resolution. Of course when you enlarge to look, you are only seeing 1000 wide images so true resolution of these images is reduced in all cases, compared to the reality.
The real close-ups though of the PS3 icon provide the highest resolution because they covered only a small portion of the whole screen. The Viewsonic PJD7822HD is the first of those, followed the Optoma HD161x (over 2X the price) and then the Epson HC3500. The HC3500 is also over 2X the price, but the HC3000 with the same optical system as the HC3500 but a feature set more similar to the Viewsonic is around $1200, so still a good bit more expensive. Only the Epson, of these, is not a single chip DLP. The 3 chip Epson has to worry about pixel mis-convergence, which is not an issue for the Viewsonic and the others.
The remaining examples are the BenQ HT1075 (replacement for their W1070), which is a couple hundred dollars more, and finally the Optoma HD141X, the only 1080p home entertainment projector we've reviewed that sells for a little less than the Viewsonic.