Contrast + Exposure
Why do blacks look gray in the room?
Because black is being lifted by ambient light, display limitations, or weak scene contrast before your eye ever judges it.
Diagnostic pageLuma / 0–100 IRE
RGB paradeChannel separation
VectorscopeChrominance
Incident trace: slightly looser spread, controlled irregularity.
01//Likely causes
Cause
Ambient light on the screen or scenic surfaces.
Cause
Display black level limitations.
Cause
Weak contrast design in the content itself.
Cause
Room architecture throwing light back into the image.
02//Check first
First move
Ambient light
First move
Display technology
First move
On-screen contrast
First move
Room reflections