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Pay monthly deals. It's worth mentioning, briefly anyway, that the easiest way to experience 3D on any of these sets is by activating the now common 2D-to-3D conversion feature.
Most TVs do a pretty good job of discerning foreground from background, but the effect is still a bit uncanny—3D at its best uses depth to add a sense of visual context think of the difference between the inside of a cramped elevator and the inside of Grand Central Terminal , and the conversion technology seems to make all spaces feel equally deep.
Perhaps the best free 3D delivery vehicle is in hiding on many of these smart sets—YouTube. For three years, YouTube has cultivated a 3D channel for depth-perception enthusiasts. The channel allows users to upload and even edit footage in 3D, then display it in either anaglyph red and cyan or a format that conforms to 3D standards that televisions can understand.
Much of the content is what you'd expect from a site that relies on the general public for content—3D YouTubers seem to enjoy poking objects into the camera—but often the 3D effect, if not the storytelling, is surprisingly good. Passive glasses are used on sets from LG and Vizio.
They are lighter and cheaper. Since the glasses are not as dark, passive sets appear brighter. In our tests, the 3D effect starts to break down when viewed off-center. The most expensive way to experience 3D entertainment on your new set is to buy 3D Blu-rays, and there's no denying that a properly mastered 3D Blu-ray movie or game looks fantastic.
During the race to make 3D TVs, manufacturers used different 3D technologies. Some used passive polarized — using left and right images simultaneously — while other manufacturers used active shutter that would synchronize left and right images by using shutters on the glasses.
And of course, the two technologies were not interchangeable. But oh, it gets worse. Converting 2D to 3D was a much bigger and messier task than anyone anticipated. Everything needed to be converted, and we mean everything! Worse yet, the battery life on early models was limited to a few hours, barely long enough to watch a 3D movie in one sitting. Later models were somewhat improved, though, sporting a longer battery life and reduced weight and cost.
Crosstalk became more pronounced the stronger the 3D effect grew. The only remedy was to reduce the strength of the 3D effect or turn it off completely. Passive 3D used simple polarised glasses much like the cinemas. Passive glasses were the better option in every way but one — they cut the vertical resolution in half.
Sadly, there was no ideal 3D solution, and even at its best 3D TV suffered from some inherent problems. Two common complaints were eye-strain and eye fatigue, which made prolonged viewing uncomfortable for some. Stronger 3D effects and rapid on-screen changes tended to make these worse.
The need for stereoscopic vision for 3D to work means that some people are unable to perceive the effects of 3D TV. This includes those who possess only one functional eye, those with a lazy eye etc. Due to the eye strain it can cause, 3D content is not recommended for those under six, and even pre-teens are advised to watch it only in moderation.
To watch 3D content, you would need to find and put on your 3D glasses. If they were Active Shutter glasses you would need to turn them on and sync them via Bluetooth as well, all the while hoping you had remembered to charge them. For some, the hassle of this relegated 3D to being a movie night treat along with the surround sound and popcorn, and not something that was used regularly.
These were essential due to the file sizes of native 4K content being so much greater than those of Full HD. This is most noticeable on larger screens.
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