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Motion Blur Substeps?

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  • RemoGambacciani
    RemoGambacciani last edited by Mar 17, 2025, 10:50 AM

    Hi guys,
    any idea how to improve the motion blur substeps?

    I would expect the MB of a single matrix (white line) being as smooth as the spline it follows (red line).
    The spline is uniformly subdivided (no render subdiv/smoothing involved).

    Seems like there are missing the subframe information (even when cached...).
    The transformation/deformation steps doesnt seem to help...

    Hint appreciated 🙂
    Cheers, R.

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    MB_Scene1.c4d

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    • Dr. Sassi
      Dr. Sassi last edited by Dr. Sassi Mar 17, 2025, 5:48 PM Mar 17, 2025, 5:47 PM

      Hi RemoGambacciani,

      Please have a look here.
      CV4_2025_drs_25_RSmb_01.c4d

      The Deformer can stretch the line, so the steps become rather large.
      It looks different if you use the Bend deformer with "Keep Length" active.

      All the best

      Dr. Sassi Sassmannshausen Ph.D.
      Senior Trainer, Maxon Master Trainer, L&D - Strategist
      Cinema 4D mentor since 2004, Member of VES, DCS.

      RemoGambacciani 1 Reply Last reply Mar 17, 2025, 6:12 PM Reply Quote
      • RemoGambacciani
        RemoGambacciani @Dr. Sassi last edited by Mar 17, 2025, 6:12 PM

        Hi @Dr-Sassi , thx a lot for the quick answer.
        It does change something if you turn it on/off but doesnt seem to have an impact to the low subdiv look, or does it? 🧐

        KeepLegthOn
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        KeepLegthOff
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        • Dr. Sassi
          Dr. Sassi last edited by Dr. Sassi Mar 17, 2025, 6:25 PM Mar 17, 2025, 6:24 PM

          Hi RemoGambacciani,

          If you use my setup, then it is pretty much the same (keep length on or off), as I have set up the deformer in that way,

          Below is a comparison: Green is mine, and Red is the file I got.

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          CV4_2025_drs_25_RSmb_02.c4d

          In the Red Version, the line is stretched, resulting in the more pronounced step.

          All the best

          Dr. Sassi Sassmannshausen Ph.D.
          Senior Trainer, Maxon Master Trainer, L&D - Strategist
          Cinema 4D mentor since 2004, Member of VES, DCS.

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