Long exposure of still images or frames may result in what we commonly refer to as burn-in, which is actually an uneven aging due to usage.
Burn-in happens over time when TVs display still images for long periods of time. This effect results in some areas of the screen with less definition or poor coloring.
The effect is progressive and it may not be immediately visible after one long exposure, so there are some recommendations to take into account in order to keep taking good care of screens.
Burn-in can happen on any TV, regardless of its technology. Most sensitive to burn-in are OLED TVs and plasma TVs. WindowSight recommends using QLED or MicroLED technologies.