The OLED55C29LD is a 55 inch 4K TV from LG. It was launched in 2022. It comes with a True 10-bit OLED evo panel. It can display a maximum resolution of 3840 x 2160 @ 120 Hz with a pixel density of 80 ppi.
Picture Quality
After screen size and resolution, the next most important spec of a display is its Color Reproduction Accuracy, which is defined by its color gamut specification.
LG has not provided a color gamut rating for this TV. But don't worry, we have other means to guess that. As the TV comes with an OLED panel, so we can conclude that the equivalent sRGB coverage of this TV would be far above 100%.
Understanding Color Gamut
Color gamut spec of a TV is the measurement of the range of colors that it can display.
In layman terms, this specification tells 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), so the image produced will look "washed out" in colors.
It is specified in different units - sRGB,sRGB (standard RGB), NTSC, DCI P3 Adobe RGB, rec.2020.
But you don't need to worry about that, below is a chart that you can use to choose a TV with good color accuracy.
After color gamut, you should look at the static contrast specification as it impacts the picture quality the same way.
The importance of static contrast ratio
There are two types of contrast specifications for a TV. Static and Dynamic. We are interested in static contrast ratio as dynamic doesn't matter much.
Static contrast specification defines the intensity of black levels. That is, a TV with static contrast ratio < 1000:1 may produce black images something like this:

Note that, such TVs are likely to suffer from backlight bleeds that will rob your experience — as shown below.

Also note, 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 show both dark gray and black as black, 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.
This TV comes with a static contrast ratio of Infinity:1. That's a plus point of owning an OLED TV. So no need to worry about this at all.
HLG (Hybrid Log Gamma), Dolby Vision, Dolby Vision IQ and HDR10 Pro are also supported on this TV.
As for brightness, it can go as bright as 250 nits.
Gaming Performance
If you are not planning to game on this TV, you can safely ignore these specifications. But if you are also going to use the TV for gaming or use it as a PC monitor, you would want to get a TV that features the lowest input lag and response time.
The input lag on the LG OLED55C29LD is 5 ms and its minimum response time is 1 ms. For a TV, its the best you can get for gaming.
What is Input Lag and Why it matters ?
This lag is the amount of time at which key-presses/mouse movements changes the content of the TV. For casual Non-FPS games, input lag doesn't matter much.
For best of both worlds, look for a TV that comes with an input lag and response time of < 20ms.
Ergonomics and Dimensions
Coming to ergonomics — VESA mount is supported on this TV with an interface size of 300 x 200 mm. However, there is no Swivel, Tilt or Pivot feature support in this TV.
The vertical and horizontal measurements of this TV are 48.11 inches and 29.76 inches respectively.
It is 1.78 inches thick. It weighs around 12.7 Kgs, another 1.7 kgs including stand. So plan your space accordingly.
Hardware and Audio
The LG OLED55C29LD comes with a 4-Core CPU. However, we could'nt find any specification about the total RAM on this TV.
The Operating System on this TV is webOS 22.
For display connectivity, there are four HDMI 2.1 ports and one S/PDIF port on this TV.
To connect USB devices, you will have three USB 2.0 ports. Other connectivity ports include — 1x Satellite In (Main — F-type female), 1x Antenna (RF) (female), 1x IR Out, 1x CI+ 2.0 and 1x Ethernet RJ45.
Regarding wireless connections on this TV, the manufacturer has provided 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. It also comes with a built-in subwoofer. So you don't have to invest on any external sound system.
In terms of power consumption, this TV consumes 81W on average and 0.5W on standby.
Both 110V and 220V lines are supported on this unit.