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Thread: Why is there a difference between production render and vray RT like this?

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    Veteran Member danb4026's Avatar
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    Default Why is there a difference between production render and vray RT like this?

    Here is the exact same file rendered in the vray frame buffer and then with Vray RT as activeshade renderer. Notice the difference in reflection and highlights. If one were to use RT to get their materials down prior to going to production rendering, wouldn't their materials be off?

    If I was fine tuning specular highlights and reflection glossiness, etc., it seems to me that RT is not that helpful. Am I right or wrong?

    RT Test.jpg

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    Moderator Maxer's Avatar
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    Default Re: Why is there a difference between production render and vray RT like this?

    This has been an issue since RT first came out, I had to create a specific RT scene file in order to get RT to generate similar images as the production engine does, it is a pain but you have to do it.
    I make fake things for real people to convince them fake things are real.

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    Veteran Member danb4026's Avatar
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    Default Re: Why is there a difference between production render and vray RT like this?

    Devin, how did you go about that?

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    Default Re: Why is there a difference between production render and vray RT like this?

    It took a lot of trial and error, basically I started with a brand new scene using a physical camera set to still and a physical sun and then just experimented until I got something that worked.
    I make fake things for real people to convince them fake things are real.

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    Veteran Member danb4026's Avatar
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    Default Re: Why is there a difference between production render and vray RT like this?

    Were you able to create some settings that would make RT and production match within the same file? Something that created parity in files moving forward?

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    Moderator Maxer's Avatar
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    Default Re: Why is there a difference between production render and vray RT like this?

    Yes, the problem is the type of camera used and the color mapping of the camera, I've only been able to get a Still camera to work with the below CM settings.


    Color Mapping-
    Linear Multiply
    dark M=1
    bright m= 2
    gamma= 2.2
    I make fake things for real people to convince them fake things are real.

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