What Is 3D TV?
3D TV is an emerging technology that allows consumers to enjoy three-dimensional movies, television programs and video games in their homes. Several companies have developed viable 3D technology for the home theater environment, but the reality of seeing 3D TV in the average household is probably years away. That's primarily because the technology requires the purchase of new television equipment, including a 3D-ready TV and a 3D-capable Blu-ray player.Three-dimensional television — 3DTV — lets home viewers experience movies, games, and other video content in stereoscopic (three-dimensional) effect. It gives the illusion of a third dimension — depth — to current TV display technology, which is limited to only two dimensions: height and width.
3D TV Buying Guide
Experience a new dimension in television with 3D TV, a
revolution in high definition home entertainment. Watch films, view
sports or play video games on LED LCD and plasma 3D televisions. Here's
what you need to know about 3DTV.
What Is 3D TV?
Three-dimensional television — 3DTV — lets home viewers experience movies, games, and other video content in stereoscopic (three-dimensional) effect. It gives the illusion of a third dimension — depth — to current TV display technology, which is limited to only two dimensions: height and width.How Does 3D TV Technology Work?
To understand how 3D technology works, it helps to know how human vision works. Our eyes are about seven centimetres apart, which means each eye sees a slightly different angle of the same scene. The brain takes images from both eyes, merges them and uses the difference between the images to calculate distance, creating a sense of depth. Interestingly, 3D content designed for children takes into account that their eyes are closer together (approximately five centimetres apart).
Getting the 3D effect at home involves tricking the brain into doing similar with the images from a television. A 3D TV displays two separate images of the same scene simultaneously, one intended for each eye. The two full-size images take up the entire screen and appear mixed with one another when viewed without 3D glasses. When they combine in the viewer's mind, and with the aid of 3D glasses, the two images are seen as a single 3D image.
Can Everyone See 3D?
Depending on which expert you talk to, it's believed that roughly 7% of the population suffers from stereo blindness and cannot perceive the dimension of depth in 3D video content. These people can view 3D material with no problem, as long as they wear 3D glasses; it simply appears as 2D to them.
How Many Types Of 3D Exist?
There are three main 3D technologies:
Anaglyph:
- The original form of 3D where you need to wear the cardboard glasses with red and blue lenses.
- Forces each eye to view slightly different images by filtering colour; the brain overlaps them for the 3D effect. Not ideal for retaining the integrity of colours.
- For environments where the screen is larger than the viewers' field of vision (e.g. IMAX).
- Suffers when you are either not front-on to the screen or tilt your head because the passive polarised glasses split the image, which is then lost.
- Delivers full High Definition 1080p 3D imagery, ideally suited to the home environment.
- Sharper images and better colour reproduction because a flat screen at home is much smaller than a cinema and occupies a less of the viewers' field of vision.
- Active glasses use shutter technology for each eye that works together with the display panel. LG also offers 3D TV glasses that are passive.
Do I Need A New TV?
Yes, as no manufacturer claims any of their TVs are upgradeable to support the new 3D technology.
What Options Should I Look For When Choosing A 3D TV?
3D TVs are available in Plasma, LCD and LED LCD display types, ranging in sizes from 40-inch (101cm) through to 65-inch (165cm).- All new 3D TVs offer full HD 1080p and a minimum of 100Hz refresh rate.
- The better the refresh rate, the better the 3D experience on a HDTV.
- For viewing fast-moving action like sport or movies on LCD or LED LCD, look at 200Hz.
- For viewing fast-moving action like sport or movies on plasma, look at 600Hz options.
Do I Need To Wear 3D Glasses?
Most manufacturers are adopting active shutter glasses, and you must wear them to see the 3D effect. If you don't wear the glasses, images on the screen will appear distorted and, generally, unwatchable.
People who wear normal prescription lenses can experience the full 3D effect — with little or no discomfort — by wearing the 3D glasses too, which are designed to fit over an existing pair of glasses.
Viewer comfort is a major concern of 3D content producers; too much of a 3D effect can become tiresome after a while, abrupt camera movement can be disorienting, and certain onscreen objects can appear blurry.
Currently, there's no technology that lets a single TV display both 2D and 3D content simultaneously without glasses. Like any technology, expect it to improve quickly, although glasses-free 3D is still a few years away.
What Content Can I Watch In 3D?
Sport will be one of the most sought-after forms of 3D content it. Twenty-five games of the 2010 FIFA World Cup were shot in 3D, while the National Rugby League (NRL) also trialled 3D broadcasts during the 2010 State of Origin series.
Most free-to-air broadcasters and Pay TV operators are currently working on how to deliver 3D television content. In reality, it may be a year or two before this reaches the screens of the wider viewing audience.
3D Blu-ray discs are readily available in the market and the number of titles is growing by the month. In addition, 3D gaming is gaining popularity.
Do I Need To Watch Everything On TV In 3D?
All 3D TVs can run in 2D mode and still deliver an exceptional 2D picture quality.What Differences Are There Between The Major Brands In 3D TV?
- Samsung offers 3D across both Plasma and LED LCD TVs.
- LG is LED LCD and plasma.
- Panasonic offers Plasma only.
- Sony offers LED LCD TVs only.
- IR requires direct line of sight, whereas RF does not.
- IR is also more susceptible to interference in certain environments.
What is 3d ready tv: 3D-ready TV sets are those that can operate in 3D mode (in addition to regular 2D mode) using one of several display technologies to recreate a stereoscopic image. These TV sets usually support HDMI 1.4 and a minimum (input and output) refresh rate of 120 Hz; glasses may be sold separately.
3D TV arrives in Australia next week, but soccer fans thinking about
watching the game with a beer might want to check the fine print.
Samsung yesterday revealed the first range of 3D TVs to go on sale
in Australia next week, beating rivals Sony and Panasonic to the
shelves.One of the first events to make use of the technology will be the World Cup, with FIFA announcing 25 matches to be filmed in 3D — including Australia's game against Germany on June 13.
But if you're planning on watching it with a beer, think again.
Viewers under the influence of alcohol are among the list of people warned not to watch 3D TV by Samsung's safety guidelines.
Others include pregnant women, the elderly, those who suffer from epilepsy and those who are sleep deprived.
And despite Samsung showing off its new 3D technology with a screening of kids' film Monsters vs Aliens at a press conference in Sydney, children under the age of six are ruled out as well.
The safety guidelines also warn people to be careful where they place their 3D TV in the house because of possible disorientation.
"DO NOT place your TV near open stairwells, cables, balconies, or other objects that can be tripped over, run into, knocked down, broken or fallen over," Samsung says.
Despite the safety restrictions, Samsung expects the TVs to be a hit with "a lot" of stock shipped into the country to meet demand.
The TVs themselves begin at about $2500 and come with two sets of special battery-powered glasses to view 3D. Extra sets of glasses start at about $100.
Sony and Panasonic are also expected to launch 3D TVs later in the year.
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