The 50NANO756QA is a 50 inch 4K TV from LG, launched in the year 2022. It comes with a 10-bit VA panel. It can achieve a max resolution of 3840 x 2160 @ 60 Hz with a pixel density of 89 ppi.
Now, the next important specification of a display that will impact your viewing experience is Color Gamut.
This TV doesn't provide a color gamut specification, so we have to take a guess.
Now, since the TV features amassive 50 inch screen, it won't come with a cheap panel, so here we can assume its equivalent sRGB coverage to be 90-100% or above. Undoubtedly The color quality on this TV will be Lifelike! Meaning it is capable of producing accurate colors by default.
Understanding Color Gamut
Color gamut spec of a TV is the measurement of the range of colors that it can produce.
In layman terms, this specification determines the ability of a TV to produce accurate colors. A panel with low gamut coverage will miss out on some colors (such as deep red), the result would be a "washed out" picture quality.
Different manufacturers use different measurement standards to specify color gamut. Viz — sRGB (standard RGB), NTSC 1953, DCI P3 to name a few.
But you don't need to worry about that, here is a chart that you can use to choose a TV with good color accuracy.
After color gamut, next in the list is Static Contrast.
Understanding the static contrast ratio
A TV with high enough static contrast ratio will produce natural deep blacks while a TV with low contrast ratio (<1000:1) will produce images that will look dusty as shown in the below image.
As you imagine, this will affect your experience considerably.
Note that, static contrast ratio and resolution go hand in hand when it comes to details. To put it into perspective, a TV with low contrast ratio will produce less shades of colors, so lesser detail overall.
If given a choice, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
LG did not state a static contrast ratio specification for this TV. Once again we have to take a guess. For a TV with VA panel, the static contrast ratio will surely atleast be 3000:1 or above — VA panels are known for that.
HDR is also supported on this TV in form of HDR10 Pro and HLG (Hybrid Log Gamma).
As for brightness, it can go as bright as 250 nits. The backlight used on the panel is Direct LED.
If you aren't planning to game on this TV, you can safely ignore these specs. But if you are also going to use the TV for playing games or use it as a PC monitor, you should get a TV with the lowest input lag and response time.
Unfortunately, LG did not specify the input lag on this unit. Now, as this is not a cheap TV from LG, input lag on this TV could be 20ms or below.
Understanding Input lag and response time
This lag is the amount of time at which device inputs changes the content of the TV. Though, this won't matter much if you aren't into competitive/FPS games like call of duty.
Although for better experience, look for a TV that has an input lag and response time of < 20ms.
Ergonomics and Dimensions
Speaking of ergonomics — If you plan to wall mount the TV, you can make use of the VESA mount provided with this TV, which by the way has an interface size of 200 x 200 mm. The unit doesn't come with Swivel, Tilt or Pivot support.
The TV measures 50 inches vertically and 44.13 inches horizontally. It is just 2.27 inches thick.
It weighs around 12.2 kilograms, another 0.2 kgs including stand. So plan your space accordingly.
Hardware and Audio
The chipset of this TV is powered by 4-Core CPU. However, we could'nt find any info on the total RAM on the TV's official specsheet.
To power its UI, the TV runs webOS 22 Operating System.
For display connectivity, LG has provided three HDMI 2.0 ports on this TV.
To connect USB devices, it includes two USB 2.0 ports. Other connectivity ports include — 1x Satellite In (F-type female), 1x Antenna (RF) (female), 1x CI+ 2.0 and 1x Ethernet RJ45.
For connecting to this TV wirelessly, you will have — Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct, Bluetooth 5.0 and DLNA.
The Audio unit of this TV is powered by 2 x 10W built-in speakers.
As for power usage, on average, it uses 68 Watts and on standby, it uses 0.5 Watts.
For powering this unit, you'll need either a 110V or 220V outlet @ 50Hz-60Hz.