LED televisions - information about this fantastic, radically new technology
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26-12-2009, 12:10 AM
| #31 | |
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I think most people would watch most TVs. Without any other TVs to compare, they would be happy to watch pretty much anything. My dad was in the business of selling and then renting TVs for years before he retired. Everyone wanted their colour control way over the top. People love over saturated colours. And if you compare a TV which is correctly set up with one in 'dynamic' mode, I suggest that most people would say they prefer the one in dynamic mode because the contrast is higher and the colours more saturated. Even though in dynamic mode, you are losing detail and certainly not watching content at anywhere near what it is supposed to look like. You have to explain to people why they should choose the correctly set up one. And even then, they sometimes decide to choose the other. Is it because people want the world in the little electric window to be brighter and more colourful than the 'real' world? We're not trying to shove anything down peoples' throats. We just want the vendors to be honest about what they are selling and for people to put some consideration into their TV purchases. Buying a TV is one of the most important decisions people make because it affects what you watch several (sometimes many) man hours every day for the next five-ish or more years. We'll be producing some tutorial videos on this subject. | |
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26-12-2009, 10:20 AM
| #33 | |
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A couple of years ago they had the choice of Blu-ray or HD-DVD and they (and their PS3 consoles, mainly) chose Blu-ray. It's not the AV pros who decide what is successful, IMO, but the general public and if they want to watch their TV in dynamic mode, what's the problem? You don't have to watch it that way on yours. We all have a choice, at least.  | |
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26-12-2009, 12:11 PM
| #35 | ||
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The problem with watching TV in dynamic mode is that the picture is quantifiably bad. And when people choose that option, they're making a choice without considering some important facts. People usually put a fair amount of consideration into buying a car, don't they? Maybe it's like choosing between two cars and picking the one with the colour they like most irrespective of the model or performance of the cars. Ok so they get the one with the colour they like best, and that's nice. But if their new car is a bag of crap under the bonnet, and they don't know any better, they'll be driving around for the next five years perfectly happy with poor performance. It's not their fault that they don't know how a TV picture should look. An awful lot won't be particularly interested. But it matters when buying a new TV. I think we could help people appreciate how important it is that they consider the choice, and then arm them with the knowledge they need to choose the TV which both suits them, and has the best performance. | ||
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26-12-2009, 2:01 PM
| #36 |
| Senior Member | Last edited by Bibby_83; 26-12-2009 at 3:13 PM. |
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| Thanks from: | Cr1spy69 (26-12-2009) |
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26-12-2009, 5:28 PM
| #37 | |
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26-12-2009, 9:54 PM
| #38 | |
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27-12-2009, 9:46 PM
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Samsung UE32B6050 also has more worse (blueish) black levels than it's LE55B655 model (better). Quote:
Philips seems to have the most powerfull speakers also in their LED models (I have witnessed). There are many ppl buying LED tv's because of the slim design. Not because of LED backlit. Quote:
 *Unstable blinking plasma screens hurts my eyes*
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28-12-2009, 11:05 PM
| #41 | |
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Maybe they paid some bucks for that review? | |
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28-12-2009, 11:37 PM
| #43 | |
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But still.. LEDs are just Light-Emitting Diodes. Testing with flashlight: As you may have noticed, the LEDs may be brighter, but they do not reflect the light back like the Incandescent light bulbs for example. I believe it is the wavelength that causes this. And LEDs do eat a lot of power when they give a bright light. My post may have been some what pointless and I surely want to see more tests that proves that some Samsung LED models really uses less power. | |
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29-12-2009, 4:47 PM
| #44 |
| Senior Member | Last edited by peahead; 29-12-2009 at 9:13 PM. |
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31-12-2009, 10:31 AM
| #47 | |
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Excellent video, very informative. Unfortunately most LED TVs don't work as well in practice as hinted at in the video (unless you buy a really good one) | |
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01-01-2010, 7:34 AM
| #49 |
| New Member | LED and LCD Televisions Greetings folks, I am a newcomer here - and these are the 2 cents that I am contributing for starters. Continual progress is being made in the TFT LCD panels that go into the making of all LCD TVs and all the "LED" TVs. As a result, every 6 months or so, one will see improvements in Contrast, Viewing Angles, Picture Clarity, Color Saturation,etc. All of these improvements are independent of and have nothing to do with the backlight. Since "LED" TVs have been launched much more recently, it is only to be expected that these would have reaped the benefits of these late improvements. It was too easy to mis-attribute all the perceived optical/visual improvements over the old CCFL-backlit LCD TVs to the use of LED backlighting. This fact is not obvious not lost on the TV manufacturers, who are struggling to keep their noses above waterline in the fierce bloodbath that is the TV market today. Anything and everything, truth, semi-truth, myth, etc that could be injected into the mind of the increasingly perplexed customer to cause him to part with his money is an 'acceptable marketing tool". (One just needs to look at the megapixel race in digicams today -- even today, when consumers are getting a little more educated on the cons of senseless megapixel count, manufacturers still want to hoodwink us by saying more megapixels is better). Perhaps it is ok to call these latest TVs as LED TVs, rather than the mouthful "LED-backlit LCD TVs" .... Maybe we could coin a new term .... LBL TV (LED Backlit LCD)  . In that way, nobody will accuse Samsung and others of trying to hoodwink the average consumer.Edgelighting LCDs using LEDs is nothing new...it is at least 10 years old. The reasons for its late deployment in large-screen LCDs were that in the past, white LEDs were extremely expensively, fluctuations in brightness and intensity were wild, and life-times were not so good, and supply was limited. Recently, all the disadvantages have been addressed to a large extent, so much so that it becomes "viable" to deploy LEDs as backlights for LCD TVs. But despite this, an LED backlight unit will still cost more than a comparable CCFL unit. That is the main reason for the price premium levied on the "LED" TVs. I think I should start calling these LBL TVs,  .It is very easy to obtain uniform lighting using a set of CCFL tubes as the entire tube itself is one single light source. The length of each tube could be as long as the width of the TV screen itself. But each LED lamp is more or less a point source of light, and in the manufacture of LEDs, especially white ones, there is a rather wide range of color tinge and brightness within each production batch. Color tinge means that the white is not really white, but bias towards blue or yellow or pink or green. In terms of brightness, the brightest lamp could be more than 3 times as bright as the dimmest. For TV use, these lamps have to undergo a sorting process to narrow down the selection to a rather tight range. Those which fallout of this range will then be sold off to 3rd parties who use the lamps either singly or in 2s or 3s only. But still this means the cost of the backlight has to cover the yield losses at sorting. Time will tell whether or not the use of LEDs will be good. Over a longer period of time, uneven brightness will start to occur, because the hundreds of LEDs within the backlight unit will start to degrade at different rates. Worst still, those less efficient LEDs which had to be driven harder than the more efficient ones will deteriorate even faster. CCFLs are becoming environmentally and politically unacceptable due to the use of mercury and other hazardous materials in their manufacture, and they require the use of devices called invertors to light up. What about LEDs ? Well, hazardous materials are also used in their manufacture, the coating on the lamps (which turn the original blue light into white) is also not that environmentally friendly. IMHO, the real quantum jump in LCD TV will be made only when the next breakthrough is achieved, when something called Field Sequential Color is used. The backlight used will be strictly RGB, and inside the LCD panel one does not even need a color filter. (this last item absorbs something like 95% of the generated light energy). The color saturation would leave you speechless. However, there are still many tough technical and manufacturing challenges ahead. Maybe in another 5 years time. thanks. |
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05-01-2010, 5:20 PM
| #53 |
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Hello all farmergiles65 - probably best to avoid your mates rather than any half decent Plasma Display  In a room with controlled lighting you'd be hard pushed to find any form of LCD that matches or outperforms the likes of an 11 or 12 series Panasonic Plasma Display - and unlike LCD you don't have to be locked into the one dead centre sweet spot to get a decent image. AntiEverything - your the marketing Depts ideal customer daleski75 - I bet the sales guy knows which has the best commision Joe |
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05-01-2010, 5:30 PM
| #55 | |
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Buying consumer goods is not a case of right or wrong. It depends on peoples budgets and specifications. | |
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05-01-2010, 5:54 PM
| #56 |
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I don't tend to 'flog' very much of anything We supply and install a few Sonos systems - not something we do very much of; though I have a few zones at home which get used 24/7 and don't see what your problem is! I've yet to have any customers complain about Sonos in terms of cost, features or support. I'm guessing your suggesting we should supply an alternative to Sonos - I'll await your recommendations! Marketing mumbo jumbo masquerading as Specifications in the Display world generally mean zero (apart maybe from overall dimensions) in terms of pre assessing the quality of image you see on-screen and the suitability of a Display for use in a TV room or Home Theatre. Joe |
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05-01-2010, 6:23 PM
| #59 | |
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My point is that people will have different criteria. for many a purchasing decision is more emotional than based on cold hard "performance". Just look at the number of Audi's on the road! For example the Sonos is fine if you want easy to set up multi room "sound". If that fits the budget and what people want should i start saying they have fallen for marketing? Of course not - that would be beyond arrogant. Nowhere in my post did I list Samsung listed specifications as a deciding factor. What I DID say was that I like the picture and the thin design. I also said that not many give a monkeys about the technology behind a purchase Perhaps the problem is - especially on blogs like this which seem to attract a certain type - is that some have a very defined view of what is right and wrong and won't accept other viewpoints. for example I read a hilarious thread on here where someone claimed that the Sonos and Linn DS systems are exactly the same! Good grief. Anyway - HiFi and AV doesn't have right and wrongs per se - its a choice and the fuss over LED/LCD is just silly. Some need to get out more. In the meantime I certainly don't need some box shifter preaching at me. Thanks anyway. | |
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