I am attempting to us Images to planes to put some decals on buildings I have modeled. When I do the transparent/alpha part of the PNG (or EXR makes no difference) makes the backdrop much darker. I believe this is to do with the AO material node used on the building as removing the AO part of the material resolves the issue.
The image attach demonstrates the issue. How can I fix this? Blender 2.93 cycles.
Thank you.