Interior Lighting - Help Needed.

[chips_007]

Hi Guys

Im trying to become familiar with Vray for sketch up and wondered if someone could help me with something? The room im doing is a bathroom, with no windows (so no external lighting), standard ceiling grid with ceiling lights plus other lighting under the vanity units.

First question is, is it best to use rectangular lights as the ceiling lights?

Second - if yes to above, why is it when I render I keep getting a faint black apprearance to all surfaces (when I've used rectangular for ceiling) and not a nice clean, lit up looking room....

any ideas? its driving me nuts!

Thanks

Pc: OS XP 64bit
SUP: Version 7.1 Pro
Vray: Version 1.48

[thomthom]

@chips_007 said:

First question is, is it best to use rectangular lights as the ceiling lights?

A rather generic question that I can't answer. It really depend on the model and scene. That is the case with most things in rendering.

@chips_007 said:

Second - if yes to above, why is it when I render I keep getting a faint black apprearance to all surfaces (when I've used rectangular for ceiling) and not a nice clean, lit up looking room....

To answer any of these questions properly it'd help if you posted some exampled of what you got. There are so many things that affect each other when it comes to rendering so the more info you got the better.
Also - some basic info on your settings would help as well, are you using Irradiance Map + LightCache? Or some other combo?
Physical camera or not?

[chips_007]

@thomthom said:

@chips_007 said:

First question is, is it best to use rectangular lights as the ceiling lights?

A rather generic question that I can't answer. It really depend on the model and scene. That is the case with most things in rendering.

@chips_007 said:

Second - if yes to above, why is it when I render I keep getting a faint black apprearance to all surfaces (when I've used rectangular for ceiling) and not a nice clean, lit up looking room....

To answer any of these questions properly it'd help if you posted some exampled of what you got. There are so many things that affect each other when it comes to rendering so the more info you got the better.
Also - some basic info on your settings would help as well, are you using Irradiance Map + LightCache? Or some other combo?
Physical camera or not?

Ok, you are going to have to bare with me as im getting used to the terminology of it all. Right, Physical camera - No. Irr Map + L.Cache, not 100% sure what it is exactly, Irr map has standard settings, L.Cache I dont know. Should I use a physical camera? better renders with this? I have attached the image, it needs work but the point im trying to get across is shown so ignore the not so perfect look of it all, I just need to work out what settings do what, best combos etc etc, then I should be on my way....hopefully.

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