The 50QNED816QA is a 50 inch 4K TV from LG. It was launched in 2022. It features a True 10-bit VA panel. It can display a max resolution of 3840 x 2160 @ 120 Hz with a pixel density of 89 ppi.
Picture Quality
After screen size and resolution, the next important specification of a display that defines picture quality is Color Gamut.
This TV doesn't provide a color gamut specification, so we have to make an assumption based on its panel type.
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. The color quality on this TV should be Lifelike! It will produce accurate colors AS IT IS intended.
Understanding the Color Gamut Specification
Color gamut spec of a display indicates the range of colors that the display can show.
Meaning, this specification indicates the ability of a TV to produce accurate colors. A display with low color gamut coverage will miss out on some colors (such as deep red), so the image produced will look "washed out" in colors.
It is specified in different units - sRGB(most popular), NTSC, DCI P3 to name a few.
But you don't need to worry about that, here is a chart that will help you choosing a TV with good color accuracy.
Other than color accuracy, you should look at the static contrast specification as it influences the picture quality substantially.
Why its important?
Static contrast ratio of a TV corresponds to its Black levels. A TV with low static contrast ratio (<1000:1) will not produce deep blacks. Moreover, such TVs are likely to suffer from backlight bleeds such as below:

Needless to say, this will impact your experience, especially in a dark room.
Also, a TV with high constrast ratio lets you to see more details. So, resolution and static contrast ratio go hand in hand in a sense.
If given a choice, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
This TV comes with a static contrast ratio of 8000:1., enough to produce deep blacks and eye-catching visuals. The panel comes with local dimming feature which is a plus.
HLG (Hybrid Log Gamma), HDR10 and HDR10 Pro are also supported on this TV, so that's a plus.
Coming to brightness, it can go as bright as 250 nits with the help of Edge LED (Local Dimming) backlight.
Gaming Performance
If you are planning to use your TV only for content consumption, you can ignore these specifications. But if you are also planning to use the TV for gaming or use it as a PC monitor, make sure to take a TV that features the lowest input lag and response time.
Sadly, LG did not specify the input lag on this unit. But since this is not a cheap TV from LG, input lag on this TV could be 20ms or below.
What is Input Lag and Why it matters ?
This lag is the latency at which key-presses/mouse movements changes the content of your display. For casual Non-FPS games, input lag doesn't matter much.
But ideally, get a TV that features an input lag and response time of < 20ms.
Dimensions and Ergonomics
The vertical and horizontal measurements of this TV are 44 inches and 28.27 inches respectively. Speaking of thickness, it is just 1.94 inches thick. It weighs approximately 14.0 kilograms and 1.6 kgs extra including stand. So plan your space accordingly.
Coming to 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. Swivel, Tilt or Pivot features are not supported on this unit.
Hardware and Audio
The LG 50QNED816QA is powered by 4-Core CPU. However, LG didn't provide any info on the total available RAM on the TV's official specsheet.
The Operating System on this TV is webOS 22.
For display connectivity, LG has provided two HDMI 2.0 ports and two HDMI 2.1 ports on this TV.
For connecting USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 1x CI+ 1.4, 1x Antenna (RF) (female), 1x Satellite In (F-type female) and 1x Ethernet RJ45.
Regarding wireless connectivity on this TV, you will have — a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi, Wifi-Direct, Bluetooth 5.0 and DLNA.
Speaking of speakers, it is packaged with 2 x 10W built-in speakers.
In terms of power consumption, this TV consumes 71 Watts on average and 0.5 Watts on standby.
It supports a power outlet of 100 V - 120 V/50 Hz - 60 Hz.