Tech Made Simple

Hot Topics: How to Spot a Fake Review | Back-School Tech & Tips | The Best Android Tablet | What's Draining Your Android Battery?

Techlicious Blog

author photo

Why Plasma TVs are Better than LED/LCD

by on December 05, 2012
in TVs & Video Players, News, Music and Video, Blog, Money Savers :: 11 comments

Woman shopping for a TVMany people dismiss plasma TVs. Their explanations range from “it’s an older technology,” to “LEDs are more expensive, so they’re better,” to “I saw one in a store and it looked terrible.”

Yet every reviewer from every major TV reviewing publication and website praise plasma TVs (including Techlicious in our HDTV Buying Guide) for their excellent image quality , not to mention their lower prices.

So what gives?

The case for plasma is multifaceted, while the case against them (and for LCDs), is rather limited.

Contrast ratio

The single most important aspect of picture quality is contrast ratio. This is the difference between the brightest part of the image, and the darkest. It’s what gives the image depth and realism. A high contrast ratio can make an image look three dimensional (without even being “3D”). A low contrast ratio will look flat and washed out.

Contrast ratio is also the greatest difference between displays of any type. Detail, noise, color, and other aspects of picture quality have all gotten very good in the past few years. Contrast ratio has gotten better as well, but not to the same extent. There’s still a wide discrepancy.

But wait! You say LED LCD manufacturers hype 1,000,000:1 contrast ratios! Surely that’s enough. Well, if that were true, it would be. The thing is, they all lie. No contrast ratio you’ve ever seen from an LCD manufacturer has anything to do with what you see on screen. In objective measurements of production TVs, plasmas almost always have a better contrast ratio than any LCD.

The only exceptions are the very few local dimming LED LCDs on the market. These are able to dim specific areas of their backlight to boost the contrast ratio. This doesn’t look quite as good as a true native contrast ratio, but it’s close. In the case of the ELITE by Sharp, the effect is excellent and the TV looks fantastic. In the case of the HX950 from Sony, it’s still good but not as good as the better plasmas.

This is why so many TV reviewers prefer plasmas. Side-by-side with an LCD, the plasma will look better. Of all the flat panel TVs I reviewed and measured this year, the one with the highest contrast ratio by far was the VT50 series from Panasonic. This was our pick for TV of the year. This was CNET’s pick for best overall picture quality of 2012. It was Consumer Reports’ highest rated TV under 60-inches (they didn’t test the 65-inch version). So it’s not just us who think it’s the best looking TV on the market, and that’s mostly due to its incredible contrast ratio.

I wrote an even longer article about contrast ratio over at CNET called Contrast Ratio (or how every TV manufacturer lies to you).

Off-axis

One of LCD’s biggest problems is off-axis performance, or how the TV looks when you’re not sitting dead center. Most LCDs, if you move even one seat over on the couch, look dramatically different. In some cases this can be as innocuous as the black level becoming more gray (reducing the contrast ratio). In other cases, the actual color of the image can change.

While LCDs have gotten better in this regard, it is still an issue. The better offenders may be OK for the seats adjacent to the center. The worst offenders will only look good to those sitting direct in front of the screen (“on axis”).

The only LCDs that don’t have this issue are IPS-based LCDs. IPS, or In-Plane Switching, is a different method for creating an image with LCDs. However, IPS-based displays have their own issues, the most notable is a contrast ratio even lower than other LCDs.

Plasmas will look the same no matter where you sit.

 

LED HDTVs for Under $500

Save On The Best Selling HDTVs

Blu-ray Deals

Best Selling Blu-ray Players

 

Motion blur

The other major issue with LCDs is motion blur. This is as it sounds: a blurring of any object in motion. This can be as simple as a blurring runner in a ball game, or as severe as the entire image blurring as a camera pans across a scene. Personally, I notice motion blur the most with close-ups of faces. The instant the shot changes to a close-up, the face seems highly detailed. Then the person moves slightly, and the image blurs just enough to obscure details like facial hair, wrinkles, and so on. To an extent, 120 and 240 Hz LCDs address this problem. Which is to say, true 240 Hz LCDs don’t blur as much with motion as basic 60 Hz displays.

However, for them to be fully effective, these higher-framerate LCDs have a process called “motion interpolation.” With video-based content like sports, this isn’t an issue. With 24 frame-per-second content like movies and most scripted TV shows, it can result in an odd artifact with motion called the Soap Opera Effect; making everything look like a cheap soap opera, instead of a movie or prime time TV show. Some people aren’t bothered by the Soap Opera Effect. I loathe it.

Because of how plasmas work, they don’t have the same issue with motion blur. Some new models, however, incorporate motion interpolation for reasons that escape this writer (marketing? I don’t know). However, in the case of plasmas, you can turn off this “feature,” with no decrease in performance.

Price

Plasmas, with very few exceptions, are cheaper than their like-sized, like-featured counterparts. In the 50-inch range this price difference isn’t too severe. In the larger sizes, it can be significant.

True, there are some new huge LCDs on the market of 70-, 80-, and even 90-inches. These are larger than the largest commercially available HDTV plasma (65-inches). However, they have not all been favorably reviewed. So yes, if you want a 70-inch or larger TV. LCD is your only choice, but know that there is a performance penalty for it.

The case against plasma

Of course, this isn’t to say plasma is a perfect technology. There is no perfect technology. If you have a room with lots of sunshine and you watch a lot of TV during the day, the added brightness of an LCD can be a benefit. This is one of the only ways an LCD is better than a plasma: light output. Most people would never need the added brightness of an LCD, and at night the extreme light output can cause eye fatigue, but in some cases, it’s useful.

Other than outright brightness, the days of LCDs just inherently being better able to handle reflections has passed. Nearly every LCD on the market has a glossy screen, making them susceptible to the same reflections that plague plasmas and CRTs before them.

So if you know you’re going to get reflections (i.e., the windows are behind you), and you can’t get curtains (which would make every TV look better), then you have two options. The first is finding one of the few matte screen LCDs on the market (they are all smaller size screens-ed). Keep in mind these will have worse picture quality overall than non-matte LCDs or any plasma. After that, search for anti-reflective coatings. Most high-end plasmas and some LCDs have this.

If you’re planning on using your TV as a computer monitor, anything static on the screen (like the task bar), can cause image retention. While this was an issue in the past, in mixed use, with the latest plasma technology, it’s not an issue anymore. I use a Home Theater PC when reviewing plasmas, and have never had an issue because I watch TV and movies as well.

Bottom Line

There is no “perfect” TV, but for most people the better picture quality, better off-axis performance, better motion resolution, and lower price mean plasma TVs are a better deal than LCDs (LED or otherwise).

Consider that those of us who test dozens of TVs a year, comparing them side-by-side, choose plasma over LCD, in most cases. Also consider why a store (or manufacturer) might want to push you towards the more expensive product. I’m not saying everyone should get a plasma over an LCD. Like I said, there are situations where an LCD is better. However, if you’re looking for the best picture quality, plus all the other factors we’ve discussed, consider a plasma.

This article originally appeared in HD Guru

You can follow Geoff on Twitter Morrison @TechWriterGeoff and his book is now in paperback!

Subscribe to the Techlicious Daily Email!

Get the Techlicious Guide to Great Photography as your FREE gift!

Discussion loading

gravatar

Which lasts the longest though?

From Glenda on December 10, 2012 :: 4:05 pm

Have plasma tv’s become comparable in price to LCD or LED HDTV’s?  They used to be so expensive no one could afford them.

Also, which tv lasts longest?  I’ve heard Plasma’s only last about 5 years.  I sure can’t afford to buy a new tv every 5 years.

Reply

avatar

As Geoff notes above, plasma

From Josh Kirschner on December 10, 2012 :: 6:05 pm

As Geoff notes above, plasma prices have come down considerably and are usually far less than their LED-LCD equivalents. You may find cheap LCDs in the same range as plasmas, but the LCDs won’t come close to the plasma’s picture quality.

Most modern plasmas are rated for 100,000 hours of TV watching (enough to last most people decades).  LCDs have lifespan limits of their own, though should also last decades. In short, lifespan should not be a consideration with purchase. Geoff wrote a much more detailed response to the lifespan issue on CNET: http://reviews.cnet.com/8301-33199_7-57383293-221/how-long-do-tvs-last-morrisons-mailbag/

Reply

gravatar

"The first is finding one

From Gary on December 10, 2012 :: 5:03 pm

“The first is finding one of the few matte screen LCDs on the market (they are all smaller size screens-ed).”

They are NOT all smaller screens. If you don’t like looking at yourself in a mirror (or your end-table lamps, or windows, etc) while trying to pay attention to what is being displayed on the screen ... then get a matte screen.  Sharp 60”, 70”, 80”, and 90” models are the answer to the extreme nuisance of glossy and reflective screens.

Your article fails to mention the energy costs for a “typical” year’s usage for plasma vs. led-lcd. Look at the yellow energy stickers and you may discover that the “less expensive” plasma costs an extra $200 per year in energy costs ... which makes LED-LCD less expensive in the long run and actually usable in a room with windows and table lamps.

Reply

avatar

Yes, plasmas do use more

From Suzanne Kantra on December 10, 2012 :: 6:17 pm

Yes, plasmas do use more energy than the most efficient LED/LCD models. But the difference isn’t $200 per year. The most efficient 55-inch LED/LCD models cost $10 to run per year, according to those yellow Energy Star Guide labels. The same label shows the 55-inch Panasonic VT50 plasma (one of our picks) costing $24 for a year. These costs are based on the TVs being on for 5 hours per day and a kWh costing 11.5 cents, the national average in 2012.

Reply

gravatar

The Sharp large screens like

From HD GURU on December 10, 2012 :: 6:57 pm

The Sharp large screens like all other 2012 large screen HDTVs are shiny screens called anti-reflective. Matte screens are called anti-glare.

If you look at the Sharps powered off at an angle you will see the are as smooth as glass. Matte anti-glare screens are dull and textured.

When viewed straight on the appear to be dull but they are not matte and light reflections from lamps etc. will have clearly defined reflections while a true matte finish will have diffused reflection.

Reply

gravatar

I respect Gary Merson's knowledge,

From Gary on December 11, 2012 :: 3:57 pm

I respect Gary Merson’s knowledge, but anyone looking for the best non-reflective screen needs to compare the Sharp models with any other 2012 brand.

The Sharps are considerably better than any other brand when mirror-like glossy reflections are one’s major issue. Personnally, I can’t stand to watch a movie in someone else’s home when I can see all of the distracting reflections in their glossy screen.

I’m just a retired guy helping friends pick TVs and laptops and once I point out the distracting nature of glossy screens, they narrow their list of options to Sharp models.

I don’t even own a Sharp HDTV but I am very interested in their “Moth Eye” non-relective mechanism which will hopefully show up on future models sooner rather than later.

The HDTV manufacturers Sony, LG, and Samsung began using glossy screens in the 2011-2012 model years to improve contrast ratios but many folks despise the distracting nature of those screens.

The Best Picture is not the one with the best contrast ratio .... it’s the one that is the most watchable without distracting reflections !

Reply

gravatar

OR...

From aaron on May 25, 2013 :: 2:10 pm

Just torn the lights off. No reflections then.

gravatar

Sorry, *turn the light off.

From aaron on May 25, 2013 :: 2:12 pm

Sorry, *turn the light off. Also I used my plasma with the lights on and it was fine just not as good as when the lights were off.

Reply

gravatar

What about repairs?

From Chris on November 08, 2013 :: 12:05 pm

As the service guy was replacing the $300 video board on my 28-month old, 55-inch LED, he commented that many, if not most, of the big screens developed problems at 24-36 months. According to him, the brand did not matter much as most are manufactured by one of three or four companies and re-labeled.

Which would type of TV would have a longer expected repair-free life? Not the expected life of the light bulb (for lack of a better term), but the overall life of the unit.

Maybe anther story here, on overall reliability of the units - long-term.

Reply

gravatar

Thanks for sharing your take

From Lisa researching plasma vs. lcd on February 12, 2014 :: 11:12 pm

Thanks for sharing your take on it. The decision is killing me!

Reply

gravatar

Visual Systems

From Visual Systems on March 12, 2014 :: 3:11 pm

Great post! Been reading a lot about different TVs recently. Thanks for the info!

Reply

© 2014 Techlicious LLC. :: Home | About | Meet the Team | Sponsorship Opportunities | Newsletter Archive | Contact Us :: Terms of Use | Privacy Policy

site design: Juxtaprose