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TV Buying Guide!

Introduction

've finally decided to buy a new High Definition TV (HDTV), but do not know what to choose? The prices have recently suffered sharp declines in virtually every category of HDTV, and now the market offers a multitude of models and diagonals to choose from. In this article we will take a view on today's universe HDTV: types, pros and cons of each type, what you should pay, and some suggestions for each category.

LCD

Due to the recent fall in prices, LCD screens have become the most popular and spread of the HDTV market. Some years ago you could not buy a LCD with a diagonal exceeding 36 "for less than € 4000, but now for half the price you can find the 46"! LCD displays are usually thin (also depends greatly on the design) can be placed on shelves or mounted on a wall, and are renowned for their sharpness, bright colors and low interference. The LCD can be very bright, and therefore are good matches when they should be placed in a lighted lot.


LCD displays are also the best choice when you want to connect to a game console or computer, thanks to their resolution and the uniformity of the panels. Although each generation of LCD panels is always better than the previous, the main problem of this technology in relation to plasma or DLP projectors is the black level, usually weak, and the contrast ratio. Many LCD displays shades of gray rather than black, often losing many details in the film marked by many dark scenes.

Pros: resolution, brightness, vivid colors
Cons: contrast, black level, shadow detail
Recommended to / for: computer, film and sports very detailed. Recommended for high ambient light.

Plasma

Despite the recent wave of LCD, plasma remain very popular among buyers who are looking for a price slightly lower than that of LCDs. Plasma are also dropped in price, now a 42 "720p costs about 1200 €, while a 50-inch model costs just under € 2000.
How LCDs, plasma is thin and may be mounted on the wall. With the first generation of plasma displays, the main problem was the lack of brightness and contrast washed out, but recent models are able to achieve an excellent contrast with deep black levels and good shadow detail. While the brightness is not yet at the level of LCDs, plasma display many are not powerful enough to create vision problems in Paracchi lit rooms.

The colors are rich and deep, and despite fewer pixels than the LCD, the maximum achievable resolutions are sufficient in most cases. Many plasma have flaws in the management of video signals that are likely to create unpleasant effects in vision. Among the most common faults known as the "mosquito effect", which makes it very visible to the array of pixels. This and other problems, such as video noise, are usually found in less expensive models, with electronics to control inefficient.

Many models of plasma TVs have a glass plate to protect the panel. This causes reflections of ambient light, but newer models, the anti-reflective coating can reduce this problem.

Another potential problem is the effect of plasma "burn-in" that occurs when a portion of the screen is continuously displayed the same graphics (eg logo of a television channel), which in the long run impresses the area, with the effect of creating a sort of shadow that remains then on other channels or other types of reproduction.

To resolve this problem many new models incorporate countermeasures, such as the pixel shift, screen savers, etc. ... If you intend to buy a High Definition TV to keep her long, consider that in this context, both LCD and plasma have the same average life of about 60,000. To be clear, the life expectancy is an estimate on how much time will pass before the screen is degraded to the point of reaching a maximum of 50% of original brightness.

Finally, one last question concerning plasma TVs is that although there are more and more models, only a few offer 1080p resolution, and about twice that of 720p models (approximately 4000 €). Regarding LCD TVs, the switch to 1080p but it will cost about 400/500 Euros.

Pros: Contrast / shadow detail, color accuracy and saturation.
Cons: no 1080p economic models are subject to display problems with some sources, some models suffer from too much glare.
Recommended to / for: contrast and rich colors make the film very enjoyable at the expense of resolution.

CRT Televisions

TV image? Yes, there are HD CRT TV, but most are in the classic 4:3 format. 16:9 There are some models, but because of production processes and the weight, the maximum diagonal is 34 ". The peculiarity of these models in image quality, far superior to LCD or plasma. A good buy model, will enjoy the rich colors, deep contrast to a fantastic, well-detailed shadows and excellent resolution in many cases the price is even lower than 1000 €. The only problem is the distribution, very limited, in fact you will find only a handful of models from online stores.



Pros: color, contrast and excellent resolution
Cons: size and weight
Recommended to / for: those seeking of image quality is unparalleled.

Video projectors

These HD projectors that use the same display technology proiezine-to-back, but the image is projected onto a large front screen. To implement a good projection system requires a spacious environment where you can control the brightness.




Votes

In this table we have assigned grades (1 to 10) the characteristics of the different technologies:

Features Rear-projection CRT LCD Plasma Projectors
resolution / sharpness 9 8 8 7 7
Colors 8 7 8 7 7
Brightness 9 8 9 7 6
Black level / Contrast 6 7 8 9 10
Price / 2 size 7 8 9 10
maintenance cost 8 8 9 7 5
Lifetime 8 7 8 8 6
TOTAL 55 55 54 53 48

As you can see the HDTV CRT TV reach a high score, but the maximum size is 34 ", a clear limitation. If they could create CRT HDTV 50", these models would certainly top the list, although of course there is always to consider the weight factor / size, which would be a record. The plasma and LCD are neck and neck, behaving differently depending on the type of content, and thereby hiding the pros and cons of joint. Projection Televisions hide several flaws, although the latest models are able to restrict them, allowing you to buy bigger televisions at the price of plasma and LCD models. As for the projectors, are the only ones that allow you to achieve high image size, but at the expense of many factors, such as problems of ambient light and the maintenance cost.

by tomshw