Hi everyone, I’m new to C4D and currently I’m creating a project using Global Illumination. The light comes from a panel with only Illumination material but I don’t know what happen to the shadow on the background of a backdrop and please tell me how to fix it?
Judging from the noise pattern on the wall it looks like your GI settings are way too low, but it’s impossible to say more without the scene file or at least more information about your settings.