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3D TV – A Guide

Samsung 3D TV

If you have decided to buy a 3D TV then it is well worth doing some research first to make sure that you make the correct choice when picking your 3D TV – use this guide to help you get started:

So, you already have Sky TV or Virgin TV and now you need to find out which type of 3D TV you should buy. There are two kinds of 3D TV, which are based around the kind of glasses used.

Active Shutter

This is the most popular type of 3D TV and is produced by brands such as Panasonic, Sony and Samsung, to name a few. The glasses are synchronised through an infrared signal and this cuts off the image in the eyes; essentially it plays a trick on the brain, making it see 3D.

Passive 3D

This type of 3D TV is usually built by LG. Although these TV’s have some similarities to Active Shutter TVs, their technology is similar to that used in cinema screens. This system filters the light, causing each eye to see a somewhat different image. In turn, this creates an illusion of depth.

So what are the pros and cons of either of these two TVs?

Positives

  • Active Shutter: Although the 3D glasses are more expensive, these TV’s portray complete HD resolution (1080p) images, therefore the image is of a superior quality, similar to that of standard HD TV.
  • Passive 3D: These TV’s are not only more compatible, but they are also not as expensive. Viewers can use any glasses, regardless of manufacturer, on these TV’s. Finally, the glasses do not require batteries and are cheaper to purchase.

Negatives

  • Active Shutter The glasses for these TV’s are more expensive and are battery operated so batteries require replacement or recharging. Additionally, the glasses only tend to work with the same brand of TV and are not universal.
  • Passive 3D The image quality is poorer.

When it comes to assessing image quality on a 3D TV, there are two aspects to bear in mind:

  • A specific 3D camera is used to created content in 3D. This camera takes two somewhat different shots of the same subject, each from a different angle. These two images are then placed upon each other- this creates the effect of 3D. When these two images fail to match up properly, the 3D TV will suffer with ‘cross talk’. The result of this is ‘ghosting’ upon the screen. Before purchasing a 3D TV, take time to ensure that the images are clear and crisp and do not display ghosting.
  • To get the best of a 3D TV, you need to view it directly on. This is particularly important should you decide to purchase an active shutter TV, as these systems send the 3D glasses an infra-red signal. If you are not sat at an appropriate angle, the signal can be lost. Spend time walking around the television wearing the glasses to make sure that the infra-red signal is being received properly.
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