2012年11月26日 星期一

2012 HDTV Buyers Guide

Job one is to pick the right screen size. LCDs (either LED or CCFL) now range from 19 to 90-inches. Plasmas are available from 42 to 65-inches. LCD screens 32-inches and smaller generally feature 720p resolution, though a number of sets as small as 19-inches offering 1080p. There are 42, 43, 50 and 51-inch 720p plasma sets as well, or 1080p in all plasma sizes.Stocks a wide range of purlinmachine, antique lamps, lights, gas light, period chandeliers, Rear Projection TVs are not flat, with a depth of around 15-inches. They’re offered in screen sizes from 73 to 92-inches and provide the biggest TV for the least amount of money. Street prices start at under $1000. All use a single replaceable lamp light source (except one series that uses lasers). All rear projectors are currently made by Mitsubishi.

What size is right for you? Consider your budget, room size, seating positions and finally if it’s an issue for you, the size of the cabinet in which you’re placing the TV. Our exclusive HD Guru viewing distance chart tells you how close you need to sit to see full resolution with a given 720p or 1080p display. Sit further away and of course you’ll still get a great picture, but human vision limitations will prevent you from seeing the sets full resolution.

LCD is your only choice if size constraints limit you to a 40-inch screen size or below. While you have a choice of plasma or LCD at 42-inches and above, HD Guru and most other experts agree that plasma beats LCD (including those labeled “LED”) in overall picture quality.

Why? Plasma offers uniform picture quality as you move off-axis, meaning everyone in the room essentially sees the same picture. LCD does not. Off axis, all LCD displays exhibit changes in color, black level and brightness, though some models have better off-axis performance than others.

Plasmas offer overall better black levels, with blacks always appearing deeper, and better contrast ratios. This is because plasmas have the ability to shut light off at a pixel level. LCDs are a backlit technology, so the best they can do — and few LCDs can do it at all— is dim large blocks of pixels using a feature called “LED local dimming. It’s not nearly as precise or effective as actually turning off individual pixels. Areas adjacent to high brightness images often produce a halo artifact.

A relatively recent advance in LCD technology uses LEDs (light emitting diodes) to illuminate the picture instead of the thin fluorescent tubes called CCFLs. Though some TV manufacturers choose to call their LED backlit sets “LED TVs” but they are still LCD TVs.Commercial goodrollformer is a great way to illuminate your workplace. However, LED backlighting has a number of advantages, one of which is lower power consumption compared to both CCFL backlit LCDs and plasma. LED LCDs can also be thinner than their CCFL counterparts.Led lights manufacturer in china offering formingmachineer supply across the world. Another LED advantage is the capability of very bright images, which makes them preferable to both CCFL backlit LCDs and plasma if you do a lot of daytime viewing in very bright windowed rooms lacking shades or curtains. For most typical room lighting conditions,We can produce Elevator goodchandelier according to your requirements. plasma HDTVs produce sufficient image brightness for outstanding picture quality.

For a given screen size, plasma consumes somewhat more power than CCFL backlit LCDs. Keep in mind, though, this is unlikely to actually save you money. Price wise, large screen plasma (50″ and over) are significantly less expensive than LED LCDs.Great deals for outdoor lighting,ledstreetlightfb and solar garden water features and fountains. That cost differential is greater than the savings in electricity one can expect, even after 10 or more years of use. Also, just because LED LCDs are more efficient doesn’t mean plasmas are inefficient. All current TV models consume very little energy compared to TVs of just a few years ago. All TVs are also required to have an Energy Guide label.

沒有留言:

張貼留言