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3D TV capability is now available on a range of Plasma and LCD LED televisions in Australia. We explain how 3D TV works, what you need to buy and why you may not buy a 3D TV today.
Major brands such as Sony, Samsung and LG are offering 3D capable televisions in Australia. Review and compare the latest 3D TV models available on the market. 
What is 3D TV?
Conventional television including High Definition TV displays objects in 2D (two dimensions – height and width). 3D television gives the illusion of a third dimension which is depth. This effect is created in the brain by providing the eyes of the viewer with two different images, representing two perspectives of the same object. One image is intended for the left eye and one for the right eye.
3D TVs rely on active LCD glasses that contain liquid crystal that block or pass light through in synchronization with the image on the display. The brain combines these two images in the viewer's mind in a visual perception process called stereopsis, which creates the illusion of depth.
Do I need 3D glasses for 3D TV?
Yes, 3D TV requires viewers to wear battery powered LCD glasses containing liquid crystal that block or pass light through in synchronization with the images on the display, using the concept of alternate-frame sequencing. They block images to each eye in sequence with the 3D television, enhancing the experience for the viewer.
These active LCD glasses are different to the passive polarised 3D glasses you may have used at the cinema or the multi-coloured cardboard glasses you and the kids have played with!
Should I buy a LED, LCD or Plasma 3DTV?
You can purchase LED, LCD and Plasma televisions with 3D capability today. Compare the latest 3D TV models here including Samsung and LG. 3D capability is only one factor in selecting a Plasma, LCD or LED television. Review our tv buying guide for more information on buying Plasma versus LCD and LED televisions.
What can I watch on a 3D TV?
You can watch 3D TV broadcasts, 3D movies from 3D capable Blu-Ray players and 3D content from gaming consoles. However there is only limited 3D content at the moment. TV channels are trialing 3D TV by broadcasting select sports events and television shows in 3D TV format. More movies are expected to be released in 3D format, inspired by the success of Avatar.
What do I need to buy to enjoy 3D TV?
To see 3D broadcast television you will need a 3D enabled television plus a set of 3D glasses for every viewer. Some manufacturers are including 3D glasses with the television however you will need glasses for every viewer. 3D glasses are retailing around $99 - $129 each.
To play native 3D Blu-ray discs, manufacturers recommend a new 3D Blu-ray DVD player that features HDMI version 1.4. Alternatively you can use the 2D to 3D convertor built into some television models.
Why wouldn't I buy a 3D TV?
It may not work for you or your family. A small percentage of the population who suffer from "stereo blindness" are unable to perceive the illusion of depth when viewing 3D TVs. Viewers with stereo blindness wearing 3D glasses see only 2D television. Ideally you should take everyone along to view a demo at a retailer before paying extra for a 3D capable television.
The other reason you may not purchase a 3D TV right now, is that it is a brand new technology with only limited 3G TV and DVD content available. As with most new technology, the cost of 3D televisions and 3D LCD glasses are expected to decrease as more suppliers offer 3D capable televisions.
Can I watch normal (2D) TV as well on a 3D TV?
Yes, 3D capability can be switched off. This is necessary because it is not recommended that you watch 3D television for long periods of time.
I own a gaming consule, will I be able to play 3D content on it?
Some manufacturers, for example Samsung, have a 2D to 3D convertor capability for their 3D televisions to convert current games and play them real-time in 3D. Sony Playstation 3 is unique in offering a firmware upgrade to enable 3D Blu-ray capability.
What is the optimal viewing condition for 3D TV?
Direct sunlight and some devices that emit IR frequencies, for example flurorescent lights) may interfere with 3D glasses.
Are there any risks with viewing 3D television?
There are photosensitive seizure and health risk warnings in the manufacturer fine print regarding 3D TV, including:
- Some viewers may experience an epileptic seizure or stroke when exposed to flashing images or lights.
- Viewing may cause motion sickness, perceptual after effects, disorientation, eye strain and decreased postural stablility.
- Watching 3D TV for an extended period may cause headache and fatigue.
- Watching 3D TV may cause disorientation for some viewers.
Children may be more affected than adults.
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