5000 lumen 1080p Data Projector
July 5, 2012
Resolution for fine detail or multiple windows. With its 1920x1080 native resolution, the 7700FullHD is well suited for showing complex images with fine detail or multiple windows with less detail in each. Split the screen into four 960x540 windows, and each one can show more of a spreadsheet or text document, for example, than a single 800x600 SVGA screen.
Excellent data image quality. The projector did particularly well on data image quality in our tests. Color balance is excellent with all presets, with suitably neutral grays at all levels, and text is crisp and readable at sizes as small as 7 points, assuming you're close enough to the screen to read it. Colors are a bit dark in terms of a hue-saturation-brightness model, and red is a little orange with most presets, but colors are generally vibrant and well saturated.
With an analog connection, I saw some moire patterns. However, they show only on screens that tend to cause the problem, and even then they're minor enough that you have to be close to the screen to see them. The bad news is that you may not be able to eliminate them by switching to a digital connection. The highest resolution I could get the projector to work with over an HDMI connection to a computer was 1600x1200. This may be related to the specific graphics chip in the computer I used for testing, however. Dell says it hasn't run into this problem before, and in my tests, the projector worked without problems at 1080p with an HDMI connection to a video source.
Picture-in-picture (PIP) and side-by-side modes. The 7700FullHD can show images from two sources at once using an assortment of different inputs. The full list of allowable combinations is too complicated to list here, but the key options worth mention are that you can show images from VGA and HDMI input at the same time, but not from two VGA or two HDMI sources.
You can also set the PIP picture size to Small, Medium, Large, or Half, which is another name for side by side, and you can easily swap the inputs, turning the main image into the PIP, and vice versa. In my tests, I ran into some complications with high resolution input, which Dell confirmed were related to bandwidth limitations. As long as I stayed with the video source set to 720p or lower and the computer to 1280x800 or lower, however, everything worked as promised.
Reasonably high quality, high volume audio. The two five watt speakers in the 7700FullHD combine reasonably good sound quality with enough volume to fill a mid to large size conference room or classroom.
Lens shift and zoom for easier setup. Although the 1.2x zoom doesn't offer a lot of flexibility for positioning the projector, any zoom is better than none. For the 98" diagonal image I used for my tests, the 1.2x translates to placing the projector at a range between 147" and 176" from the screen. Also adding useful flexibility for placement is both vertical and horizontal lens shift. I measured the vertical shift at a total of roughly 22% percent of the screen height, or a little over 11% above and 11% below the center position. The horizontal shift varies with the vertical shift position, but with the lens at roughly the midpoint of its vertical range, I measured it at a little under 30% of the screen width, or roughly 15% left and 15% right of the center position.