need help here please lighting this scene

Toobis

(see pic below pls) I am attempting to light up a corridor scene which the entire thing is in OBJ. form but so far having zero luck doing it with Iray It just comes out totally black seemingly no matter what lights I place in there. I tried it with 3delight and it works but not Iray at all.

In the pic you see the Iray attempt on the right which is just the black screen. Any suggestions here on how to light this thing because I'm baffled right about now on how to do it.

Richard Haseltine

What lights have you tried adding? In Iray things always cast shadows, so distant lights, HDRIs, and lights plalced outside the model interior will not work. Also, by default the Iray exposure iis for a bright day outside so you will need to adjust that (in Render Settings, Exposure, ISO, f-stop, and speed all adjust the tone mapping and itt doesn't make any difference which you use).

Radkres

O.o Have you tried changing the Materials to Iray materials?

Toobis

Richard Haseltine said:

What lights have you tried adding? In Iray things always cast shadows, so distant lights, HDRIs, and lights plalced outside the model interior will not work. Also, by default the Iray exposure iis for a bright day outside so you will need to adjust that (in Render Settings, Exposure, ISO, f-stop, and speed all adjust the tone mapping and itt doesn't make any difference which you use).

Just various ones but makes no difference its just pure black each time I render. Please can you explain a bit more about the Iray exposure setting if you have time?

Radkres said:

O.o Have you tried changing the Materials to Iray materials?

oh would that matter? didn't think the scene materials for the walls would make a difference with Iray lighting.

Richard Haseltine

What various lights? How are you adding them?

Fishtales

What tunnel are you using?

Toobis

I'm just adding any Iray light anywhere lol. Any advice on what sort I should add and where perhaps?

Radkres

Ok you can render in 3delight but when you render in Iray it is all Black right.

I would suggest just placing one Iray object in the scene to see if it renders and if everything else is black then it will tell you you need to change the material settings of the object.

Fishtales

It is black because there is no light/camera behind wall/object or you need to set Tone Mapping. If you tell us what tunnel you are using someone who has it might be able to help better.

Toobis

I totally forgot about this post sorry. I was able to use something else better in the end. Thankyou everyone for the advice anywa and sorry bout the late reply.