Controlling Image Exposure in the Post with Fusion or Combustion


Hey there,

does anybody know how to control the Image Exposure inside of Autodesks discontinued Combustion or in Blackmagics Fusion?

I dont find this function natively in the apps and i also cant seem to find plugins for that. But i need this, because i now need to render in passes and Exposure Controls are generally ignored when rendering them.

Would be nice if someone has a tip

Thank you guys!