Iray room lighting

marble · March 2019

By the way, because these "lights" are not recognised as lights by DAZ Studio, they will not light the scene in the viewport (only in the render). So if you have no other lights (nor the camera light) then the scene will look dark. In this case, use the Scene Light button for the Viewport (CTRL-L is the toggle).

miladyderyni_173d399f47 · March 2019

music2u4u said:

miladyderyni_173d399f47 said:

"You have to hide the lights or they will show in the render. If you hide them in the scene, they won't work in the render!"

IME, Hiding in Scene Tab doesn't work. Do this:

1) Select the light in the Scene Tab

2) Go to Lights Tab (Editor, not Presets) > Display > Rendering

3) Under Rendering, there's a Visible in Render option that toggles between ON and OFF. When toggled to OFF, scene will be lit by that light but it won't show in the scene.

I think you have to do this for each light separately.

I did this but as you can see, there are no lights listed in the lights tab.

Okay, What you have selected is the top level of Dome Light. Expand it. and select one of the lights underneath the Dome Light heading--then go into Lights tab.

If you look at my screenshot again, I am using a set of lights called SYSGTG Bright SuperArray, which is a preset with many individual lights. So I didn't select it in Scenes tab. Instead, I expanded SYSGTG Bright SuperArray and selected one of the lights in the set, Photometric Spot Light 1.

mmkdaz · March 2019

Why do I use the torus object? For some reason, in iray the torus gives more the type of lighting I expect when I use sphere in other render engines. Also, I'm too lazy to click "Double sided" on plane emissives.

For those that have problems with render times using the torus, try DOME ONLY rather than DOME and SCENE as your render environment.

Not saying it's the best, just saying give it a test try.

music2u4u · March 2019

marble said:

music2u4u said:

Next, the same two dome lights, pushed up just outside of the top border. They are both turned ON in the show in scene display tab (You can see them, thus pushed out of the border area). They are both turned ON in the show in render tab. Now there is light.

So...if I turn them OFF in the scene, I get no light. Like turning off a light switch. This is what I was trying to explain.

BTW...I found the "display" tab in the Parameters tab, Not in the lights tab.

I think there is some confusion here about "turning off" Ghost Lights. These lights are really just primitive objects with emissive surfaces, not "lights" in the sense that a DAZ Studio spotlight is a "Light". So you won't find them in the Lights tab. The parameters for them are applied in the Surfaces tab and the way to get them to light the scene without being visible in the scene is to use the controls I mentioned in my last post.

Go to the: Content Tab>Light Presets>IRay Ghost Light Kit

I know this already, how do you think I got them on the screen? Also, the "Apply first" icon states that it's a "visability" icon. All it does is makes the "Debug" red material go away. The light itself is still there. You must physically move it out of the scene or it will show in the render. If you try to hide it or turn it off, you will have no light in the render. I have no confusion about that part. I am somewhat familiar with primative surface lighting because I was introduced to it way back when I first started using the "Reality" plugin. I got pretty good at it to the point where Hobby World magazine, a world wide magazine, asked me to do an interview with them and it was featured in the December 2010 issue of their magazine. Here is one of the renders they wanted to show in the article. This entire render was lighted with flat planes converted into surface emmision lights. No other lights used.

music2u4u · March 2019

marble · March 2019

music2u4u said:

marble said:

music2u4u said:

Next, the same two dome lights, pushed up just outside of the top border. They are both turned ON in the show in scene display tab (You can see them, thus pushed out of the border area). They are both turned ON in the show in render tab. Now there is light.

So...if I turn them OFF in the scene, I get no light. Like turning off a light switch. This is what I was trying to explain.

BTW...I found the "display" tab in the Parameters tab, Not in the lights tab.

I think there is some confusion here about "turning off" Ghost Lights. These lights are really just primitive objects with emissive surfaces, not "lights" in the sense that a DAZ Studio spotlight is a "Light". So you won't find them in the Lights tab. The parameters for them are applied in the Surfaces tab and the way to get them to light the scene without being visible in the scene is to use the controls I mentioned in my last post.

Go to the: Content Tab>Light Presets>IRay Ghost Light Kit

I know this already, how do you think I got them on the screen? Also, the "Apply first" icon states that it's a "visability" icon. All it does is makes the "Debug" red material go away. The light itself is still there. You must physically move it out of the scene or it will show in the render. If you try to hide it or turn it off, you will have no light in the render. I have no confusion about that part. I am somewhat familiar with primative surface lighting because I was introduced to it way back when I first started using the "Reality" plugin. I got pretty good at it to the point where Hobby World magazine, a world wide magazine, asked me to do an interview with them and it was featured in the December 2010 issue of their magazine. Here is one of the renders they wanted to show in the article. This entire render was lighted with flat planes converted into surface emmision lights. No other lights used.

All I can say, then, is that the "visibility" icon (Apply first) works just fine for me. I can have a Ghost light smack in front of the camera and it doesn't show up in the render (nor in the viewport in which all I have is an outline box).

Fishtales · March 2019

For indoor lighting I just use whatever is required to light the scene. That could be ordinary lights, primitives made Emissive or the light fittings made Emissive.

This render uses the lights set to Emissive.

2019-03-27 12:38:14.619 Total Rendering Time: 15 hours 20 minutes 18.33 seconds

Click on image for full size.

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Iray room lighting

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