The ep7120's orblike housing is easily leveled by using the dial on the front left of the base and swiveling the unit gently by hand. Power, menu, volume, picture mode, keystone, and input buttons, along with a four-way rocking controller for menu controls, reside atop the projector. The remote, itself a comfortable-to-hold orb, includes all the same controls, plus mute. The keypad lights up when you press any button.
The ep7120 uses a Texas Instruments 1,024x768 native resolution DLP chip. Unlike other projectors that use TI's 1,280x720 HD2+ chip, the HP doesn't have enough resolution for full 720p HDTV, so both 720p and 1080i sources are converted to fit the available pixels. Furthermore, wide-screen DVD and other 16:9 sources are also subject to lots of scaling, which may have contributed to some of the artifacts we saw.
While the ep7120 doesn't provide much in the way of picture tweaks, each preset picture mode can be customized as you see fit for contrast, brightness, and the other basics. The Warm color temperature comes closest to the 6,500K standard (see the geek box for more). Aspect-ratio controls aren't as sophisticated as those of some other displays. All you can do is indicate whether the selected input is wide-screen or not and choose a stretch mode of Best Fit (stretches 4:3 signals to fit wide-screen), 1-to-1 (displays each pixel without change), or Reduced (fits 4:3 material into 16:9 screen height). Keystoning is vertical only.
Connectivity options include one component-video, one S-Video, one composite-video, one RS-232 control port, and one DVI with HDCP. HP bundles both a VGA-to-DVI adapter to connect non-DVI computer sources and a 20-foot S-Video cable inside the projector box. The long cable is convenient if you plan to hang the projector from the ceiling, but as always, component or DVI should yield truer color.
We tested the ep7120 using a 96-inch-diagonal Da-Lite HighContrast Da-Mat screen specifically designed for use with LCD and DLP projectors. Right out of the box, the color temperature was impressive compared to that of many projectors. But it was still a bit blue and varied substantially from 6,500K up and down the grayscale. We couldn't access the service menu to calibrate the projector by press time, and there were no RGB user-menu controls. After we properly set black level, however, the grayscale improved noticeably. The color decoder showed minor red push.
Black-level performance was impressive, with little detail lost in dark portions of the image. The dark scenes in the barn and the horse's stall in chapter 10 of Seabiscuit, for example, were a pleasure to watch. Plenty of detail was visible in Seabiscuit's head and neck, though we have seen some similarly priced projectors do even better. Unlike some LCD projectors, this DLP has no noticeable screen-door effect, even when viewing closer than the recommended distance of two screen heights.
Despite this projector's 2:3 pull-down and defeatable edge enhancement, we still noticed some jagged lines, particularly with wide-screen source material. Also, when set to maximum zoom, the picture bowed out noticeably--a tell-tale sign of barrel distortion. You're better off placing this HP closer to the screen instead of zooming the lens.
High-definition 720p content looked great. DiscoveryHD's delicately colorful triptychs were practically a window into the more interestingly beautiful places in the world. HDNet's Odyssey 5 more than made up for its lack of plot with highly detailed images.
HP's ep7120 is an attractive, easy-to-use DLP projector that outputs a good-quality image without much fuss. If you'd like to fuss with your projector, Hitachi's LCD-based PJ-TX100 has a full range of user controls, 1,280x720 native resolution, and a black level equal to, or maybe even better than, that of this HP. It also costs a good deal more, however.
|Before color temp (20/80)||6,950/6,950K||Good|
|After color temp (20/80)||6,725/6,750K||Average|
|Before grayscale variation||+/-150K||Good|
|After grayscale variation||+/-36K||Average|
|Color decoder error: red||+5%||Good|
|Color decoder error: green||-5%||Good|
|DC restoration||No stable pattern||Poor|
|2:3 pull-down, 24fps||Y||Good|
|Defeatable edge enhancement||Y||Good|
Editor's note: We have changed the rating in this review to reflect recent changes in our rating scale. Click here to find out more.