The HP mp3320 digital projector is hard to categorize: it's small and light enough for everyday travel, provides the brightness and sharp focus needed to give a lights-on presentation, and is priced like an entry-level projector. Its 2,400-lumen output is roughly twice that of other projectors, such as the HP mp3135 and the . On the downside, the HP mp3320 lacks wireless hardware (which is included on other budget projectors such as the Epson PowerLite 765c), it produces a lot of heat, and its color leans toward yellow. At $1,999, however, the HP mp3320 projector delivers one of the best bargains on the market in terms of lumens per dollar. On the other hand, if brightness isn't your top priority, the and the offer better color performance for less money.
Inside the rounded black-and-gray case is the latest Digital Light Processing (DLP) imaging engine from Texas Instruments that creates XGA images. The projector weighs a light 3.8 pounds and measures 2.9 by 9.9 by 8.3 inches, putting it on a par with Epson's PowerLite 765c, which is on the smaller end of the portable category. The HP mp3320 comes with a padded case, a small remote control, and basic cables. Its 6-pound travel weight is a full pound less than the Epson PowerLite 765c.
A unique, slide-open cap protects the lens, and we like this design better than the string-attached caps we see on most projectors. Focus and zoom dials are easy to spot on top of the projector, but the image loses its focus as it is zoomed in and out, which makes quick adjustments frustrating. The HP mp3320 projects sharp, clean images ranging from 2 to 24 feet (diagonal), and it can project 4:3 computer images as well as wide-screen images. Unfortunately, the HP mp3320 lacks the automatic keystone correction that is commonplace in this class of projectors; however, its manual keystone control is easy to access in the onscreen menu, and it let us quickly achieve a square image in our tests. Along the back are connectors for VGA, composite, S-Video, audio, and a four-pin USB port.