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Adjust Exposure settings from Revit

Autodesk Cloud Rendering seems to ignore the settings Revit under the Adjust Exposure button, so many of the resulting renders look very flat. Are there plans to send this information from Revit, or setup a similar system on the Cloud Rendering website?

Here are some test renderings that illustrate the difference.

Autodesk Cloud Rendering


Revit 2012


Both renders on the "High" setting and at about the same resolution.
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  • Hi Bret,
    The information is already sent from Revit. You can re-render from the cloud rendering portal and choose "native" for exposure. This should closely match the exposure settings used in Revit. Perhaps we need to expose this directly in Revit for the initial render or simply default to the native exposure algorithm.

    Longer term, this will become moot - the high dynamic range image is stored in the cloud so it will be relatively simple to allow real-time, exposure adjustment any time after rendering.

    John
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  • Thanks John,
    It would be helpful to expose the Exposure control when sending the render from Revit. So the image dosen't have to be rendered twice. But I'm not sure the setting is working correctly. Here is the same rendering using the "Native" exposure.

    Much darker, and still very warm.

    If the future tool will have the same controls (or more) that Revit has in the Adjust Exposure settings, I look forward to that tool. But it does need to have at least what Revit has now. This image needs the white point adjusted, and the shadows and highlights enhanced, not just brightness.
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  • Thanks Bret.
    I'd like to debug this mismatch. Something seems wrong, the sun position and time of day has changed dramatically in your latest rendering. If you think that the only changes was to the tone mapping algorithm, then we clearly have a bug.

    Could you upload this model to https://documents.cloud.autodesk.com
    and share it with me. It will be used only for debugging this issue.

    Thanks,
    John
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  • Apologies, the previous post was from me.

    John (not Michael)
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  • Now that you point it out the sun angle is very different on the latest rendering. It's a very similar angle to the very first rendering of this project that I sent. Which leads to the question, does this service cache the Revit model and re-use it?

    I logged into the cloud rendering service with a different user-name, and sent this file again, and this time the results were very similar. The shadows cast from the trees are very different, but the shadows on the building are the same, and the lighting levels more equal.

    Revit - Meduim


    Cloud - High - Native
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  • John,
    File uploaded but the sharing feature on that system seems to be broken.
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  • Hi Bret, can you give a little more detail on how sharing is broken on documents.cloud.autodesk.com? I'd like to help get this working for you.

    We've had some confusion when people try to add email addresses to share with. When you enter the email address in the Share dialog, you need to hit on your keyboard to add them to the invite list. Once you've done that you can press "Save and Invite" to send out the invitation...

    Let me know if this continues to not work for you.
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  • Yep, that was the issue I was having. I just had to hit the enter key to get the e-mail to go in. I kept clicking the plus button to the right but that seemed to do nothing. I'm not sure what the plus button for.
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  • OK, cool, glad its working now for you.

    The plus button acts as an address book. As you start sharing files or folders with people and they accept the invitations, they will show up in the menu that pops up when the plus is clicked. This simplifies sharing by not requiring you enter the email address of someone every time you want to share with them. Unfortunately, we have a bit of a usability issue with the dialog.

    The good news is we are working on this and should improve the sharing dialog to be more intuitive in the near future!
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