Is it really that hard to buy a TV?
The most important characteristics when you select a TV are a video signal, such as resolution, size, appearance, the type of scan, and, in closing, the major TV standards available today, both analog and digital. Of course, this signal completes its path to the display device to display video images in charge.
Although in any home cinema system the audio industry plays a crucial role for the involvement in the scene, the images are displayed on the screen – especially if large – to ensure the emotional aspect of a typical cinematic experience, either the TV or satellite Digital terrestrial and DVD or Blu-ray. To this end, it is important to choose a display device that best can get married with their own needs, but also with your family budget.
To this stage, if you’ve ventured into some shopping, e-commerce site or simply have observed a brochure, you’ll surely run into a series of bombastic as incomprehensible acronyms and technical terms. It is now established practice by the industry retrofit all its products with a list of the main characteristics, whose only goal is to lure unsuspecting consumers with information very accurate and often poorly understood.
So we can not trust the technical specifications published by the manufacturer? Again the answer is no. Just understand what data can be absolutely reliable, what precautions to take with them and, finally, to be rejected on the spot.
Throughout this guide I will show you just what are the technical characteristics that are typical of a flyer, first explained the meaning more or less hidden and how to defend themselves from marketers!
Screen Size and Format
The first fundamental choice when we decide to buy a TV is the size. We do not believe to insult your intelligence by explaining what the term means, but simply that we would like you bear in mind some key issues before removing the check.
The size of a screen is referred to simply measuring the length of the diagonal in inches (1 inch equals 2.54 centimeters). In the case of a 42-inch plasma with 16:9 aspect ratio, its diagonal will be equal to 42×2, 54 cm, or about 107 cm. If, instead, let’s look at the base and height, correspond to 93 and 52 cm. It is no coincidence that we have specified the 16:9 format because, of course, the dimensions change when we find ourselves in front of a screen in 4:3: In a 42-inch screen in 4:3 format, the length of the diagonal would continue to of course be 107 cm, but the width and height of 86 becomes 64. Moral of the story, with the same diagonal screen in 16:9 format will present a height of less than an equal size in 4:3 ratio, and therefore the two variables are not comparable.