I was meaning ArchiCAD's Alpha build 5 plugin - we're still using it even it's not being developed! Still by far the best renderer for ArchiCAD out there :)
The query was if I needed to change any settings in ArchiCAD or the Corona preferences to enable a full Linear workflow, or is purely as simple as editing the gamma of any textures / colours, and then saving the result as an EXR file?
Reading about implementing it in other software / renderers, there seem to be a few render preference settings that need to be tweaked - I was just wondering if that was the case with this plugin too, as I can't see anything in the options.