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Side by side stereo image & Render Crop

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  • Side by side stereo image & Render Crop

    Hi all,
    Not sure if this is a bug or if I'm missing something. I'm trying to render a side by side stereo EXR sequence while also cropping the top 10% of the image.

    Current setup is a VRay cam & stereo helper. 'Adjust resolution' is checked in the stereo helper and I'm defining the render resolution for one eye in the render settings, which also has the camera type set to spherical panorama with HFoV = 60, VFoV = 100.
    For technical reasons I need to render VFoV at 100, but then crop the top 10% of the image to give a VFoV of 90 degrees, which gives a pre-crop render resolution of 720x1422 per eye.

    If I use Render Crop to define the bottom 9/10 of the frame only one eye gets rendered in the VFB, with a resolution of 720x1280.
    Strangely, if I use Render Region, the image in the VFB shows the full side by side resolution (1440x1422) but again only one eye is rendered (the left eye)

    I've not found a way of cropping the EXR sequence outside of max as, due to additional render layers, Photoshop complains when trying to re-save the images in a batch process.

    Any suggestions/help would be much appreciated.
    Thanks,
    Jon

    Should also note: using max 2018 and Next
    Last edited by MonosP; 04-07-2018, 03:26 AM. Reason: Appended with max and V-Ray versions

  • #2
    I managed to replicate the issue. Not sure yet whether we can do something about.
    Why do you need to crop to rendering actually, what's the technical reason behind it?
    I'm sure also that other editors like Nuke/Fusion have much better control over the cropping which will operate on all channels and etc.
    Svetlozar Draganov | Senior Manager 3D Support | contact us
    Chaos & Enscape & Cylindo are now one!

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    • #3
      It seems it's possible to get that with V-Ray Region and VRayOptionRE with Exr Data Windows set to Render Region:
      Click image for larger version

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      VFB will display the whole image, but when the image is opened in PhotoShop only the region will be loaded:
      Click image for larger version

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      Let me know if that's acceptable solution for you.
      Svetlozar Draganov | Senior Manager 3D Support | contact us
      Chaos & Enscape & Cylindo are now one!

      Comment


      • #4
        Hi Svetlozar,
        Thanks for looking into this, would have replied sooner but have been having internet issues.
        It looks like your suggestion with VRayOptionRE works exactly as I need, thank you!
        Jon

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