Bottom line: Which one is better?
LG C8 OLED is a better TV when we compare LG C8 Vs Samsung Q9FN because it has an infinite contrast ratio which renders local dimming feature unnecessary, has ultra-wide viewing angle and has nearly an instantaneous response time.
Stand; the two TVs have stands.
Wall mount; Samsung Q9FN has VESA 400×400 whereas LG C8 has VESA 300×200
Borders; Samsung Q9FN has 0.43” (1.1cm) whereas LG C8 has 0.35” (0.9cm)
Max thickness; Samsung Q9FN is 1.61” (4.1cm) whereas LG C8 is 1.89” (4.8cm)
Max temperature; Samsung Q9FN has 97oF (36oC) while LG C8 has 93oF (34oC)
Average temperature; Samsung Q9FN has 84oF (29oC) while LG C8 has 88oF (31oC)
Native contrast; Samsung Q9FN has 6055:1 while LG C8 has Inf:1
Local dimming; Samsung Q9FN has local dimming.
SDR real scene peak brightness; Samsung Q9FN has 667cd/m2 whereas LG C8 has 318cd/m2
HDR real scene peak brightness; Samsung Q9FN has 908cd/m2 while LG C8 has 666cd/m2
Gray uniformity; Samsung Q9FN has 6.7 while LG C8 has 8.7
50% Std. Dev; Samsung Q9FN has 3.553% while LG C8 has 1.495%
50% DSE; Samsung Q9FN has 0.236% whereas LG C8 has 0.117%
Viewing angle; Samsung Q9FN has 5.4 whereas LG C8 has 8.8
Black uniformity; Samsung Q9FN has 9.6 whereas LG C8 has 10
Native Std. Dev; Samsung Q9FN has 0.537% whereas LG C8 has 0.230%
Total reflections; Samsung Q9FN has 1.4% whereas LG C8 has 1.3%
Pre calibration; Samsung Q9FN has 7.4 whereas LG C8 has 8.1
White balance dE; Samsung Q9FN has 2.88 whereas LG C8 has 2.52
Color dE; Samsung Q9FN has 3.39 while LG C8 has 2.11
Gamma; Samsung Q9FN has 2.19 whereas LG C8 has 2.15
Post calibration; Samsung Q9FN has 9.4 while LG C8 has 9.6
White balance dE; Samsung Q9FN has 0.15 while LG C8 has 0.11
Color dE; Samsung Q9FN has 1.77 while LG C8 has 1.09
Gamma; Samsung Q9FN has 2.20, the same as LG C8.
100% response time; Samsung Q9FN has 15.5ms while LG C8 has 1.7ms
Flicker-free; the two TVs are not flicker-free.
Black Frame Insertion (BFI); both TVs have optional BFI.
Motion interpolation; the two TVs have motion interpolation 30fps and 60fps.
Variable refresh rate; Samsung Q9FN has FreeSync.
Native refresh rate; both TVs have 120Hz.
Input lag; both TVs have 9.1
Supported resolutions; Samsung Q9FN has 8.8 whereas LG C8 has 8.3
Total inputs; each TV has 4 HDMI, 3 USB, 1 Digital optical audio out, 1 Tuner (Cable/Ant) and 1 Ethernet. LG C8 has 1 composite in.
Inputs specifications; each TV supports HDR10, HLG, HDMI 2.0 Full Bandwidth, CEC, HDCP 2.2 and Wi-Fi. Samsung Q9FN supports HDR10+ while LG C8 supports Dolby Vision.
Audio pass-through; the two TVs support ARC, 5.1 Dolby Digital and 5.1 DTS.
Low-frequency extension; Samsung Q9FN has 113.14Hz whereas LG C8 has 63.50Hz
Max; Samsung Q9FN has 88.4dB SPL whereas LG C8 has 90.0dB SPL
Weighted THD @ Max; Samsung Q9FN has 0.892 whereas LG C8 has 0.547
IMD @ Max; Samsung Q9FN has 1.18% whereas LG C8 has 7.68%
Smart OS; Samsung Q9FN operates on Tizen version 2018 whereas LG C8 on WebOS version 4.0
Interface; Samsung Q9FN is easy to use and is not smooth whereas LG C8 is easy to use and very smooth.
Ads; the two TVs have ads.
Apps and features; the two TVs have apps and features.
Remote; Samsung Q9FN has small whereas LG C8 has large
TV controls; the two TVs have TV controls.
When we compare Samsung Q9FN Vs LG C8 in this review, LG C8 is better as it has an infinite contrast ratio which renders local dimming feature unnecessary, has ultra-wide viewing angle and has nearly an instantaneous response time.$ 1731.32