Big Screen Buying Advice
1. Choose the Right Screen Size for your RoomYour seating distance will determine your sense of picture clarity and detail as well as the quality of the viewing experience. If all you watch are true HDTV images, then you can sit as close as twice the diagonal screen sizeò€“ about 8 feet away for a 46-inch or a bit more for a 50-inch diagonal screen. But sitting that close may not be practical, because until the final conversion to all-HDTV broadcasting is completed (thatò€™s at least 5 years away) a lot of your TV viewing may well be conventional analog TV, and those images may look fairly crummy up close. (Remember early big screen TVs?) If you watch regular non-HD TV sitting too close to a big screen, youò€™ll see all the flaws.
2. Flat Panel or Box
Those futuristic and very cool plasma and LCD flat panels that are only a few inches thick are appealing, but budget, screen size, and your need for optimal HDTV clarity are big factors you must consider. To get full HDTV resolution on a plasma panel means getting a 50-inch diagonal screen, and thatò€™s expensive (about $3,000 USD and up). If you are willing to abandon the flat panel and accept a more conventional box (one thatò€™s no more than 14 inches deep), you can get full HDTV resolution for a fraction of that amount. A 50-inch diagonal DLP rear-projection set thatò€™s only 14 inches deep and weighs about 75 pounds would be $3,200. Also, you will still get a bright, stunningly good HD picture, minus the ultra-cool flat-panel appeal, of course. If you still like the flat panel and are willing to accept good but not true HD picture quality, you can save a lot of money on a smaller LCD or plasma display.
3. Do You Really Need HDTV Resolution?
Letò€™s say you wonò€™t give up on the thin flat panel display, that you simply must have it. If you are satisfied with DVD clarityò€“ itò€™s called Standard Definition (480 lines).Ò There is also Enhanced Definition (EDTV) with 480-line progressive scanning (480p).Ò The picture wonò€™t be HDTV, because the plasma screen will convert incoming HD signals to its own resolution,? but DVDò€™s will look great, and any programs shot in HD will look a lot better than on your old analog set. And youò€™ll have your flat panel!
4. Wide-Screen 16:9 vs. Standard 4:3
Though the widescreen 16:9 aspect ratio (the ratio of the screenò€™s width to its height) is the HDTV standard, and matches most movies on DVD and HDTV programs, there are many TV series and news shows shot in the conventional, squarish TV shape of 4:3. Give some thought to the ratio of material you watch, and whether youò€™d prefer a digital HD 4:3 set that will display conventional TV programs full-screen, and wide-screen HD programs with black bars at the top and bottom. Remember that if you choose a wide-screen HD set, regular TV 4:3 programs will have large black bars to each side, unless you use the setò€™s stretch mode, which will extend the edges of the image to fill the wide screen, at the expense of sometimes considerable image distortion. Some 4:3 sets also have raster compression,? a vertical compression mode that maintains HD 1080i or 720p scanning lines so you get true HD clarity. You should look for that feature in a 4:3 HD set.
5. Big-Screen Choices: Know the Virtues and Flaws
If you are set on a big HD screen and you donò€™t want the hassle of a front projector that requires a totally darkened room, then a rear-projection TV (RPTV) is a logical and in some instances, a more economical choice. Most RPTV sets will get you true HD picture resolution, and will cost much less than a 50-inch plasma flat panel. The least expensive are the big and bulky CRT rear-projection sets, available in a wide choice of screen sizes, from 40 to 80 inches diagonal, almost all in HD versions with 16:9 widescreen displays. Like direct-view HD CRT sets, rear-projection CRTs are very heavy and have considerable depth. The image looks its best in a dimly lit room, and at increasing angles, the screen typically becomes dim or darkish. Uniform brightness over a wide viewing angle is not a virtue of CRT rear-pro sets. Lifespan on average is about 7 to 10 years.