YES,
but no ZBrush all models are Form-Z ( except those bought from designconnected )
I was not using gamma 2.2 at this time (it is really recent for me)
so my trick was to make different selections for gypsum walls, seilings, clothing sheets etc... (everything that in real life diffuse light very well)
to those selections in post a was applying levels to wash out the "dirty greyish look" of fast GI and low definition REVERSE ILLUMINATION (in corners where light don't go).
- applying a level on the entire image just wash all the nice shadows and darks areas. -
no levels
with no level
an exterior image