Hi! Thank you very much for your interest in the subject. Also thanks for critic and comments. I'll try to answer your questions with a few pictures and screen-shots.
Lighting setup is very simple: 3 VRay Lights (sky portals) and 8 bit jpg image in Environment slot (i could not find a good HDRI image
). Color mapping is off, gamma 2.2.
This is a raw image (32 bit, exr):
In Magic bullet plugin I reduced an exposure to remove over brights on the windows, and then began edit curves to add the contrast. Then I added some effects like chromatic aberrations and vignette:
Also ambient occlusion pass and ZDepth pass for DOF:
To simulate the filmgrain, I used this image (overlay mod, 10% opacity):
That's all. Hope this information will be useful for you.
PS. juniel, what is LWF?