I am looking to create a blueprint or post processing effect that acts based on the exposure in the scene.
For this i need the exposure value. I want to create more noise/desaturation when there are low light levels, just like with human vision.
However i cant seem to call the current exposure value.
I can read out this value when i Visualise HDR in the viewport, like here:
Anybody got ideas on how to obtain this value from UE4?