The More Pixels
The Sharper the Image
4K Ultra HD TV has a resolution four times greater than the HDTV we are used to watching today
Current 1080p HD TV has about 2 million pixels whereas Ultra HD TV has over 8 million pixels
400% better than Standard HDTV
With 4K Ultra HDTV it is all about resolution. The amount of pixels means a higher quality picture with more definition, layered transitions and subtler gradations; what we see on 4K will be truer to what we see in nature.
Immerse Yourself in Clarity
The small pixel size of Ultra HD TVs allow for a greater viewing range than Standard HD TVs. Sit up to two times closer and still experience true HD clarity.
What is the difference between 4K and UltraHD?
Short answer is there is no difference. Long answer is, technically there is a difference between 4K TV and Ultra HD TV, (3840 vs 4096 pixels) however it is perfectly acceptable to use the two interchangeably. If you see a TV labeled as 4K or Ultra HD it is safe to assume they mean the same thing.
Things to Consider
4K Ultra HD is ahead of its time. The amount of Ultra HD content available today is minimal; broadcast TV and movies are not yet available in Ultra HD, similar to the early days of Full HD.
The Ultra HD content is coming: Future-Proof your TV now
Netflix and Amazon are beginning to offer shows in Ultra HD and DirecTV will be offering Ultra HD content in early 2015. This makes now a prime time to invest in Ultra HD. By investing in Ultra HD TV now you can be assured your television won't be obsolete in 2 years. You will be ahead of the game as more and more 4K content becomes available.
In the meantime Ultra HD TVs offer upconverting, or upscaling, which converts standard HD content close to 4K resolution. While it isn't perfect 4K quality, it still produces a better picture than standard 1080p HDTV.
What about price?
When first introduced, Ultra HD TVs were very expensive. However, as the technology continues to improve pricing continues to fall. Ultra HD TV prices have fallen dramatically in the last year and have become very affordable. 55" Ultra HD televisions are now available starting around $999.
If you have watched TV recently, there is a good chance it was an LED TV. LED TVs are inexpensive and energy efficient, making them the most popular type of TV available. As technology has advanced, LED TV picture quality has greatly improved, allowing them to overcome Plasma and LCD TVs.
What is an LED??
LED is the type of light source the TV uses to illuminate the picture on the screen. LED stands for Light Emitting Diode; The LEDs themselves are typically located on the edges of the TV; at the top and bottom or the sides (varies by manufacturer). The LEDs are used to light up the picture you see on the TV screen by sending a beam of light across the screen which is then reflected onto the image.
Let's get it straight:
Technically, LED TVs are LED-LCD TVs; LED is the light source and LCD (Liquid Crystal Display) is the type of screen. The type of TV that is often referred to as LCD today is more appropriately known as CCFL-LCD TV (cold cathode fluorescent light). CCFL-LCD TVs are not as energy efficient as LEDs, contain mercury and don't match the overall quality of LED.
What to look for:
When deciding which LED TV is best for you, there is one key factor to pay attention to; contrast ratio. To put it simply: the difference between the brightest image a TV can produce and the darkest. LED TVs accomplish a good contrast ratio through local dimming.
Local dimming is essentially the dimming of parts of the screen that should be dark while keeping the parts of the screen that should be bright, bright. Why this matters: Good local dimming adds depth and creates a crisp, clear picture.