Originally Posted by Justin Hunt

Just looking at your sun settings, a couple of things

1) The photon Target is way too small, it should be just large enough to fit the windows, ruff guess 15 - 20 meters

Would this matter if my scale is 1:1mm. By increasing it to 15-20 meters, would that be really huge?

2) turn Off aerial Perspective, this is better for (as its name suggests) aerial shots where you want a bit of fog/distance haze on the horrizon, not so good for interirors.

Of course. Will do.

3) Increase the sun shadow softness to clean up the shaow edge grainyness

Will do.

Exposure control

1) Turn Off exterior daylight, you may need to play with the physical scale

I only have the daylight system ( mr sun & mr sky ) as light source for this scene. Does that mean I have to increase the physical scale higher than what I currently have?

GI

1) Increase the photon sampling radius, try 200 - 500mm

Are you pertaining to Volumes: Maximum Num. Photons Per Sample?

2) Increase the Max trace Depth, gets more light bouncing around , you may need to compensate with exposure control

Should I keep Max. Reflections & Max. Refractions the same?

3) leave Decay at 2

4) Turn On "All objects generate GI"

FG

1) increase the interpolate to 80 -100 smooths out the blotchies

2) Noise filtering to standard, anything higher slows down rendering too much

Yeah. I just figured it will make things smoother but almost none have changed.

jhv