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Trying to figure out Physical Camera & Exposure

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  • Trying to figure out Physical Camera & Exposure

    I've been playing around with the new release, but I'm seeing some big inconsistencies with the new Physical Camera. I wonder if I'm missing something?
    First some questions:
    1: Does the physical camera work at all without the exposure control activated? it doesn't appear so so I'm assuming it has to be on. Is the VRay Exposure control just for legacy support?
    2: The preview in the exposure control doesn't seem to function with Vray?
    3: Do the "image control" controls have any effect on VRay rendering?
    Now, here is my test setup. I started with a clean Max and VRay install. The only things I changed from the default settings (other than turning off the stupid viewcube) was to change the display units to cm, switch to VRay renderer and activate GI. Next, I created a 500cm plane with a 100cm diameter teapot, a VRaySun with default settings, and a Physical camera with F. stop 11, Shutter 1/500 and Iso 200. Lastly I set viewport to realistic, and set it to use scene lights.
    As you can see the render turned out as expected, but the viewport display is much darker than it should be. If I change the camera settings to make it look right in the viewport it renders everything beyond white. So, what am I doing wrong?

    Click image for larger version

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    Edit: Also, Max crashes when opening the Slate Material Editor when trying to render the preview for VRayScannedMaterial
    Last edited by Shimakaze; 01-06-2015, 11:32 PM.

  • #2
    Originally posted by Shimakaze View Post
    1: Does the physical camera work at all without the exposure control activated? it doesn't appear so so I'm assuming it has to be on.
    The camera exposure will not work without the exposure control activated.

    Is the VRay Exposure control just for legacy support?
    Yes. It will be removed.

    2: The preview in the exposure control doesn't seem to function with Vray?
    There are some things that we need to fix. It won't work with the V-Ray VFB, and it will be odd with the progressive sampler.

    3: Do the "image control" controls have any effect on VRay rendering?
    Not right now. I have a conceptual issue with these - generally, they should be in the frame buffer and not baked into the render.

    Next, I created a 500cm plane with a 100cm diameter teapot, a VRaySun with default settings
    The sun is too dark in the viewports. Will fix this in a patch too.

    Also, Max crashes when opening the Slate Material Editor when trying to render the preview for VRayScannedMaterial.
    Hm, this one I don't get. But will keep looking.

    There will be a patch in a few weeks that addresses most of these issues.

    Best regards,
    Vlado
    Last edited by vlado; 02-06-2015, 04:27 AM.
    I only act like I know everything, Rogers.

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    • #3
      Good to know, thanks! Guess I'll put off 2016 until then. Can't do much without access to the material editor.

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      • #4
        Originally posted by Shimakaze View Post
        Good to know, thanks! Guess I'll put off 2016 until then. Can't do much without access to the material editor.
        You can always delete that plugin if you are not going to use it.

        Best regards,
        Vlado
        I only act like I know everything, Rogers.

        Comment


        • #5
          Aaah good idea! thanks

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