Want to use the TexSky Texture as the background

[SHoutzager]

Doing some simple tests for a lighting that I like. All I have on is an Environment Light, Background. I have the TexSky on and Rhino Sun Light turned on. When I render the sky is white and the scene is lit up very brightly.

Indirect Illumination is off. Hmm. I can't even see the sun in wireframe mode to control it's position. Maybe there is a more intuitive way to get a sky and sun created by Vray which I can control and see and it renders out in the background.

S. Houtzager

[fooprobe]

Sounds like you may be overexposed. Is the physical camera turned on? What settings? And make sure the texsky is linked to the sun.

[fpedrogo]

Yes, I agree with fooprobe, seem that the scene is overexposure. You can adjust the physical camera as fooprobe recommended you and also you can change the color mapping to HSV Exponention, this mode is very similar to the Exponential, but it will keep the color hue and the saturation of the pixel, instead of washing out the color.

[SHoutzager]

Yep, setting the physical camera settings got it to a normal sky. I turned the film speed to 50 or so. Was wondering how to link the texsky to the sun?? As you can see I selected Rhino Sun Light from the dropdown menu. The texsky sun is directly overhead. I also want to be able to see this sun when wireframe mode. Also, anyway to get some clouds in there? Thanks.

https://dl.dropboxusercontent.com/u/5048027/sun1.PNG

[fpedrogo]

Hi
You have two sun, because the Rhino Document sun is enable. In V-Ray for Rhino we have two choice for the sun. The first is using the V-Ray sun icon located in the toolbar. This sun icon allows you to have a physical light in the viewport. To properly use this sun, we have to link it with the environment GI(Skylight) and Reflection/Refraction (Background). After select TexSky in the GI(Skylight) , you have to select the sun that you want to link. You will see two sun in the sun combo box. One in the sun that you made with the V-Ray sun icon ( the name is usually "sun 1") and the other is the "Rhino sun light". You have to select sun 1.
To avoid the double sun, you will have to turn off the rhino sun. Type "sun" in the Rhino command line and hit enter. You will see the Rhino sun light window. Be sure that this sun is disable in that windows. If you render, you should see only the V-Ray sun.

However, if you want to use the Rhino sun light. You have to be sure that the V-Ray sun is disable or just delete it. Also the Rhino sun light should be linked in the environment.

[SHoutzager]

Yep, I have gotten the basic one VRay sun system set up. I am doing it without a physical camera just to simplify it. I am finding the sun very very bright at any position in the sky. I had to turn down the sun intensity to .3 to get a fairly normal rendering. And I had turn down the overall background environment setting to .5 to get the sky to look normal. Does this look correct?

https://dl.dropboxusercontent.com/u/5048027/sun2.PNG

[fpedrogo]

The V-Ray sun is very bright because we are mimic the real sun. The easy way to control the exposure of the sun is using the physical camera. You can try using the physical camera and set your iso to 100, the F-Number to 8 and the Shutter Speed to 200. If you don't want to use the physical camera, then you will have to reduce the multiplier as you showed in the images. I'm still thinking that your scene is too bright. Try by reducing the sun to .1 or .2.
Can you share the scene with me?

[fooprobe]

Also, the vray texsky has no clouds - use a sky pano (try cgskies.com) instead. And there is no way to visualize either the rhino or vray suns other than rendering them (although you do get the little sun directional light icon which shows its basic direction)