Real Camera is an add-on that allows you to control the Blender camera like a real camera. From version 3.0 it works only in Blender 2.8.
Marco writes:
We finally added real time Auto Exposure for Eevee and Cycles, this feature is like eye adaptation on other render engines like Unreal Engine.
- Auto Exposure automatically adjusts the exposure (brightness) of the scene based on sampled pixels luminosity like a real world camera.
- Auto Focus automatically sets the focus point based on the center of the camera.
https://www.youtube.com/watch?v=lhY9E0bHwFE