this is a Post-Processing Filter to create a more natural environment. It works perfectly for every camera and has no performance impact at all.
All in all the filter is complete for now but of course I'm open for feedback and ideas for improvement. Please let me know how you like it. Cheers.
Install in "...\Steam\SteamApps\common\assettocorsa\system\cfg\ppfilters" and enable in Assetto Corsa graphics menu.
Screenshots from version 1.0: