Vray Sun and Sky

[Yihh]

Hi,

 

I'm new to Vray and i'm currently trying to improve my rendering skills so forgive me if some of these questions are easily solved. I'm having a problem with my Vraysky in the environments rollout. When I do not use a vraysun, it is a bright white, and not a nice sky gradient. But when I do use a vraysun, it retains the same whiteness unless I decrease the intensity multiplier to .03 and less. (rest of the Vraysun settings are the defaulted ones)

 

I have attached 2 examples of this. The darker picture has a sun multiplier of .01 and it is about the correct building lighting I want, but the sky looks like it is night...

 

The lighter picture has a sun multiplier of .03 and has the correct sky color, but the building is now washed out.

 

Just wondering what i'm doing wrong here...there are also no other lights in the scene (default lights are also turned off). I have never had this problem with the mentalray sky. Also is there any option in vray to utilize the same date/time factors that could be adjusted with mrsky/sun? (Such as making the scene at 7am for a sunrise sky/lighting) Thanks!

[Wyszolmirski]

Ok let's start:

 

You have to use such low values if you don't use V-Ray physical camera.

 

Anyway you can set different sky and sun intensity if you want. Just check manual node in VraySky map... (drag it to material editor from environment).

 

You can use time/date settings in the same way like in mental ray... Just select V-Ray sun instead of mrsun ...

 

Good luck

[Yihh]

that did it, thanks a bunch!

 

I keep forgetting to use vray objects now that i'm rendering using vray.

[luckysaqi]

hello

you can see that you find the correct intensity of vraysun at the value of 0.01

and the correct intensity of vraysky at 0.03

 

the soluion is simple

when u put a vray sun in the scene, there is an option to automatically use a vraysky map in the background,

 

click yes to use that option, then press 8 key to open the environment dialogue box and drag the skymap to a material editor slot in the material editor using instance option

 

then check the manual sun node

assign the sun and use the intensity multiplier of the sky at 0.035

 

and let the intensity of the vray sun remain at 0.01 or 0.015 (what ever you r using)

 

hope you find your solution