No tone mapping for backrounds?

Hey Folks,

i work a lot with cars onto backdrops and i just want to know if there is a workflow or trick just to get rid of tone mapping for directly visible maps as backdrops. I do not want to fake HDR effect by boosting highlights with output maps or similar. I just want the map being untouched and want that tone mapping only affecting the rendered objects in scene.

When i change the exposure settings or increase the filmic highlights, to get proper looking exposure on the rendered objects the backdrop is getting affected too.

The typical workflow is that you make a proper looking backdrop before you do any rendering and then try to match the rendered car as close as possible to the backdrop (highlights shadows etc.).

I already using the backdrop on a CoronaOutput map while the “Affected by Corona VFB tone mapping” is unchecked.

Thanks for any Help.

You’re totally right, but this isn’t my trouble. HC also affecting the backdrop as well and is killing my whitepoints. I’m looking for a way where my backdrop is not getting tone mapped by corona vfb at all. Something like “do not affect backround” on camera/tone mapping settings.

See Attachement. HC is affecting backround as well. So this is a bug you say?



Alright, i got it. Re-Render is the key. As you said all changes being calculated backwards again so everytime i hit render, the backround is getting his original exposure.

I hope there can be a more decent solution for this! As i said something like “do not affect backround” on tone mapper. This way i could play with exposure settings in real time.

Thanks for helping!

I thought that’s what the ‘Refresh’ button is for… it doesn’t do anything in IR as far as I can see but this here is a case where it should restart rendering in IR.

The Refresh button doesn’t do anything so a parameter change is needed anyways. But it should refresh.

What you suggest sounds good to me, this could be made a general checkbox in the renderer settings.