interior rendering

[lander_cg]

Hi guys,

I'm pretty new in this rendering world and was trying for my work to render some
interiors. The problem is that I want smooth white walls and ceiling. I add a white material
to those surfaces but they always appear as grey, probably because of the lac of natural sunlight blocked
by the ceiling. Is there someone who can give me some tips to obtain nice modern white walls and ceilings
in renderings.

Kind regards,

[andreas]

Re: interior rendering

Hi Lander,

it would probably be easier to help when you could post some pics that show 1) your current rendering and 2) your light layout (e.g. top view wireframe) and 3) your current vray settings. in general you should maybe use some fill lights, use a proper color mapping (eg. rheinhard 1.0/0.6 -> depends on the scene) , use the gamma curve in the VFB and also very important do a lot of postwork in PS...

best regards

Andy

[lander_cg]

Re: interior rendering

Hi Andy,

I use a standard lightscene from VRAY :"gi_irmap_low.visopt". For the walls I set some standard white material with low reflection (do you know a good material for this?). I tried with the rheinhard 1.0/0.6 and some extra directional lights, but the walls and ceiling remain grey instead of white.
In the VFB was no gamma curve? Are fill lights some special light type or do you mean just any light type to lighten up the room?



Thx for helping me out

[andreas]

Re: interior rendering

... ah much better with pictures

1) you use directional lights, these are imho more suited to simulate sunlight ( parrallel shadows) so i would not use these as fill lights. Concerning the Light layout i would say it depends a little bit on what you are trying to archive, do you want to show direct sunlight trough windows or diffuse daylight or just artificial illumination?

to light up your scene I would change the directional Lights into rectangular lights for a start, make them quite big maybe 2mx2m and play around with the intensity...

take a look here:

http://www.spot3d.com/vray/help/150SP1/light_params.htm

I guess you are using physical camera if not do so and play with the F-number (lower values -> more light)

important: you must balance your fill lights with your artificial light sources to avoid burned out areas that is usually a bit of try and error so make sure to always use fast setting when doing tests...

the VFB there is a curve you can edit . Do you see the icons in the lower left of the VFB? press the very left, edit, then press the 6th icon to see the result in realtime. To archive e.g. more contrast in your image you should a so called "S" curve lower the left tangent handle and push the right one up to raise the midtones...

save as tga and try auto colour or auto contrast in PS...


best regards

Andy