What Is HDTV?
First things first. If you're in the market for an HDTV and you're not already fluent in the language of the industry, you likely only know that you want to buy an HDTV. As it would happen, that definition is quite a vague. High Definition Television is a term which can refer to several different things. So, let's start at the beginning.
For decades, television used the same resolution for all of its images. This resolution was 720:480, and it was meant for 4:3 aspect ratio tube or projection televisions owned by families the world over. This resolution was slightly different in European countries, but only slightly. It was the advent computers, with their high-resolution displays, which slowly created interest in the creation of televisions with higher resolutions.
Modern HDTV resolutions are typically termed as 720p, 1080i, or 1080p. The number stands for the number of horizontal pixels in the display. 720p stands for the resolution of 1280x720, while 1080i and 1080p represent 1920x1080 resolution. These basic formats are separate from the native resolution of the actual displays. Most displays do offer a native resolution of 1280x720 or 1920x1080, but some displays use different resolutions such as 1366x768 or 1280x1080. However, video is not recorded into this format. A processor inside the HDTV takes care of making sure the image displays correctly. HDTV, then, is simply a few commonly accepted formats which can in fact be displayed on a variety of devices with a variety of resolutions.
What Do You Need?
Confused? Don't worry. Wrapping one's head around resolutions and formats can be difficult at first. Having explained the basics of what HDTV means, it is wise to put that knowledge aside for a moment and start considering what exactly you are looking for in your new HDTV. By this, I am not speaking about resolutions. Marketing by television manufacturers has a nasty habit of giving consumers the wrong impression. You might, for example, assume that a 1080p HDTV is what you want as it has the highest resolution available. In fact, the importance of the resolution is often secondary to other qualities of an HDTV.
A good first step is to decide what size of HDTV you're looking for. This can be easily done by determining how far away you are sitting from where the HDTV will be mounted and then using a viewing distance calculator which can tell you exactly what size to buy based on the distance you'll sit from the HDTV. This is an important part of the process, as buying an HDTV which is too small will make the HDTV pointless - the image will be so far away that your eye will not be able to make out the extra detail.
Having determined the size you're looking for, next decide what qualities you want to have in an HDTV. Does it matter how thick or heavy the HDTV is? Do you own or plan to own numerous devices that will need to connect to the HDTV? Is color accuracy important to you? Sit down with a piece of paper and write down your priorities. Keep this handy when viewing this guide and any other guide you might read. Then take it to the store. It is very easy to mistakenly buy the wrong HDTV if you don't already know what is important to you, particularly when a retail salesman is talking about terms like Full HD and True Color while pointing suggestively at an HDTV which is just a little bit more than you were intending to pay.
HDTV Buyer's Guide: An Intro to HDTV
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