The QN85LS03B is a 85 inch 4K TV from Samsung. It was launched in 2022. It comes with a 10-bit VA panel with Anti-glare/Matte finish. It can display a maximum resolution of 3840 x 2160 @ 120 Hz with a pixel density of 52 ppi.
Picture Quality
Now, the very next spec of a display that will impact your viewing experience is its Color Gamut.
The Samsung QN85LS03B comes with 100% DCI P3 color gamut coverage, which is equivalent to 136.36% sRGB coverage. The color accuracy on this TV should be Lifelike!
What Color Gamut means ?
Color gamut spec of a display is a measure of the range of colors that it can produce.
A panel with poor color reproduction will produce undersaturated/washed out colors that will spoil the immersion.
Different manufacturers use different measurement standards to specify color gamut. Viz — sRGB, NTSC, DCI P3 Adobe RGB and rec.2020.
For example, the color gamut of this TV is specified in terms of DCI P3.
But don't worry, here is a chart that you can use to choose a TV with good color accuracy.
Other than color accuracy, the static contrast specification of a TV holds almost equal role in picture quality.
What is Static Contrast ratio ?
A TV with low static contrast ratio will not produce deep enough blacks and possibly can bleed backlight as shown below:

The above TV's static contrast is 800:1. So make sure you get a TV with a static contrast of >= 1000:1. More is better.
Also, a TV with high constrast ratio allows 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 features a static contrast ratio of 8000:1., well enough to display deep blacks and eye-catching visuals. For the record, it also comes with local dimming technology which is a plus.
HDR is also supported on this TV in form of HDR10, HDR10+, HDR10+ Adaptive, HDR10+ Gaming, HLG (Hybrid Log Gamma) and Quantum HDR.
Coming to brightness, it is can achieve a maximum brightness of 250 nits, which is powered by Edge LED backlight.
Gaming Performance
If you are planning to use your TV only for content consumption, you can safely ignore these specs. But if you are also planning to use the TV for playing games or use it as a PC monitor, you would want to get a TV with the lowest input lag and response time.
Unfortunately, Samsung did not specify the input lag on this unit. Now, since this is not a cheap TV, we can expect an input lag of less than 20ms.
Understanding Input lag and response time
This lag is the latency at which your key-presses/mouse movements changes the content of the screen. Though, this won't matter much if you aren't into competitive/FPS games like call of duty.
Although for better experience, get a TV that features an input lag and response time of less than 20ms.
Ergonomics and Dimensions
Speaking of ergonomics — VESA mount is supported on this TV with an interface size of 600 x 400 mm. The unit doesn't come with Swivel, Tilt or Pivot support.
The TV measures 85 inches vertically and 75 inches horizontally. It is just 1.1 inches thick.
It weighs 44.5 kgs and an additional 0.9 kgs if you include stand. So plan your space accordingly.
Hardware and Audio
The core of this TV is powered by a Quad Core CPU. However, Samsung didn't provide any info on the total RAM on the TV's specsheet.
The UI on this TV is powered by Tizen 6.5 Operating System.
For display connectivity, Samsung has provided three HDMI 2.0 ports and one HDMI 2.1 port on this TV.
For connecting USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 1x RS232 (C), 1x Cable/Antenna In (F-type female) and 1x Ethernet RJ45.
Wireless connectivity options on this TV include a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi, Wifi-Direct, Bluetooth and DLNA.
For audio, it is packaged with 2 x 9W speakers.
Speaking of power consumption, on average, this TV uses 121W. On standby, it uses 0.5 W.
It supports a power outlet of 100 V - 120 V/50 Hz - 60 Hz.