Thank you for the feedback!
The original size render took 15 hours... I decided to up the settings a little
and that's what I got. It was mostly over night so not a real issue but it made clear to me how little tweak can amount to long render times.
The DOF tests were rendered 1120px wide and took 20-30 min each.
I used standard
3dsmax spotlights for the wall washing, playing with the attenuation and decay settings to get it just right... I prefer to use IES though mostly since you don't have to play with it too much and seems rather fast anyway - This time I just copy pasted a previously setup spotlight.
The wall light fixture's have a VRayLight sphere inside them.
No interior work was done in this project... it's all empty rooms inside. There was no time to actually plans this by the architect let alone by me for the render that was needed "yesterday" as usual
I'll try some real VRay fog with this scene and compare with the post work technique using the ZDepth pass. It's about time i get the hang of it since I can see it really adds quality to images posted in the Challenge section.