Cool, that's good. You seek accuracy then
Sorry for missing out key detail
. Real Cinema is one of the settings that it's in every mode. "Cinema" is one of the Picture modes overall.
Real Cinema is in the same Picture options menu that TruMotion is in .
For a high-quality source, such as disc I would use (personal opinions follow - may as well paste in the whole gumph I wrote for a friend):
Energy Saving off
Aspect ratio Original
Just scan On
Eye Comfort Mode Off
Screen shift On
Logo Luminance Adjustment High (personal taste, but protects against image retention. Low/High only adjust the speed it fades around logos etc.
Contrast=85
Brightness should be 50, but you need to tweak for your panel perhaps with tests.
Sharpness: personal taste (0 is neutral, 10 gives edge smoothing, >10 adds sharpness)
Colour=50
Tint=0
Expert Controls
Dynamic contrast (Off/Low/Med/High) = Off
Dynamic Tone Mapping (HDR10 / HLG only) = Off is accurate/Personal taste. Some overly dark HDR games may benefit.
Super Resolution (Off/Low/Med/High) = Off
Colour gamut (Auto/Extended/Wide) = Auto
White Balance/CMS are panel-specific and should not be shared. But see below for colour temp.
Picture options
Noise reduction = Off
MPEG noise reduction [2018: required for Smooth Gradation/De-contouring filter] (Off/Low/Med/High/Auto) = Low or Off, personal taste
MPEG noise reduction [2019: (Off/Low/Med/High/Auto) = personal taste, can remove picture detail
Smooth Gradation [2019 on]: Personal taste, can remove picture detail
Black level (only for RGB signals) = Low for video content, High for 0-255 content if using a PC's desktop. Try for Auto.
Real Cinema = On if it's not greyed. Detect movie content within an interlaced signal, and output correctly at exactly 24Hz.
Motion Eye Care = Off
TruMotion: very personal taste. I have it Off, but things can look juddery sometimes.
TruMotion-Custom: De-Judder [for 24Hz] Controls frames that are added. Everyone can find their happy medium. Too high will produce the Soap Opera Effect.
TruMotion-Custom: De-Blur [for 50/60Hz] Without corrections to 50/60Hz material, fluid motion will look blurred. This sharpens it back up.
Additional Settings
Eye Comfort Mode (for late night "remove blue" to help you sleep viewing) = Off
Per-mode settings
OLED Light. A=35 B=50 C=25. Defaults are MUCH too bright. 35 gives 120nits. SDR Content is mastered for 100nits. Higher values for a very bright room but increased risk of burn-in the higher you go.
Expert Controls
Gamma (BT.1886/2.4/2.2/1.9). "night settings"=BT.1886/2.4. "Day settings"=2.2. Using 2.4 is the accurate setting and gives more "pop" but needs to be in a proper dark room for shadow detail. Hence using 2.2 for daytime.
Colour temp (Cool/ Medium/ Warm1/ Warm2/ Warm3). =>Warm2. This is accurate. Allow a few days to get accustomed to it.
HTH
ps. The "basic" picture modes don't have "Expert Controls" menu, instead they have a noddy menu replacing it called "Advanced Controls". with cut-down options.