In 2013 Dec, Costco was selling a 55" Hisense 4k 3840 x 2160 TV for as little as $1500 now selling for $1000 and 65" for 1700. I asked a good friend what the deal is and then did my own looking up. In fact the specs may look very impressive to most people who can read the spec.
For flicker free experience the panel should support 60 frames per second and 120 for 3D.
3D was dead before arrival. The few people bought them realized that their brain and not the TV was creating the TV image and after a while the brain gets tired and they have headache if they don't feel dizzy.
So, what is wrong with the specs of TVs now available as 4K? Most TVs released in 2013 supported max 3840 x 2160 24 frames per second. In Sep 2013, HDMI 2.0 spec was released supporting 3840 x 2160 60 frames per second which makes it flicker free. Still there is an issue. For ages we are used to seeing 8bits per color Red, Green, Blue in a color format known as 4:4:4. HDMI 2.0 limits the color format to 4:2:0 effectively half the possible range of colors. To get 4:4:4 3840 x 2160 60 frames per second, 2X the bandwidth of HDMI 2.0 is required. If you really want to know try reading this link.
Understanding HDMI 2.0: Enabling the Ultra-High Definition Experience
If you more inclined to read tables, read this link.
HDMI From Wikipedia
There is a technology called Display Port 1.3 which does that today used in high end computer monitors but not in TVs. It is a different cable. May be there will be HDMI 2.x or 3.0 to make it possible to see in 2160p the same color depth 4:4:4 and same frame rate 60 as the current entry level 1080p TV in 2016. But then the price of such 4k TV would probably be $5k for 65" Vs $1300 I paid for my 65" 1080p 120Hz 4:4:4 Tv 2 years ago. That means I may have to wait for 5yrs to replace my 65" 1080p TV with 2160p (aka ultra HD) for $1300.
For flicker free experience the panel should support 60 frames per second and 120 for 3D.
3D was dead before arrival. The few people bought them realized that their brain and not the TV was creating the TV image and after a while the brain gets tired and they have headache if they don't feel dizzy.
So, what is wrong with the specs of TVs now available as 4K? Most TVs released in 2013 supported max 3840 x 2160 24 frames per second. In Sep 2013, HDMI 2.0 spec was released supporting 3840 x 2160 60 frames per second which makes it flicker free. Still there is an issue. For ages we are used to seeing 8bits per color Red, Green, Blue in a color format known as 4:4:4. HDMI 2.0 limits the color format to 4:2:0 effectively half the possible range of colors. To get 4:4:4 3840 x 2160 60 frames per second, 2X the bandwidth of HDMI 2.0 is required. If you really want to know try reading this link.
Understanding HDMI 2.0: Enabling the Ultra-High Definition Experience
If you more inclined to read tables, read this link.
HDMI From Wikipedia
There is a technology called Display Port 1.3 which does that today used in high end computer monitors but not in TVs. It is a different cable. May be there will be HDMI 2.x or 3.0 to make it possible to see in 2160p the same color depth 4:4:4 and same frame rate 60 as the current entry level 1080p TV in 2016. But then the price of such 4k TV would probably be $5k for 65" Vs $1300 I paid for my 65" 1080p 120Hz 4:4:4 Tv 2 years ago. That means I may have to wait for 5yrs to replace my 65" 1080p TV with 2160p (aka ultra HD) for $1300.
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