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Activity Forums Adobe After Effects motion blur on nested 3D cube?

  • motion blur on nested 3D cube?

    Posted by Jimmy Brunger on May 2, 2007 at 4:00 pm

    Hi all,

    I’ve got a simple 3D cube I made in AE7, which I’ve parented to a null, so I can animate cubes rotation, etc. Jusr noticed though that when I apply motion blur it blurs all the layers separately, rather than the cube as a whole (i.e: you can now see gaps between each plane)

    I’ve tried pre-comping the cube and parenting that before animating the null, but it’s still doing it! I’ve tried all combi’s of collapse trans, etc but still no joy.

    Is there any way round this?

    Thanks.

    *Production Studio Premium / *Combustion 3
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    Win XP Pro SP2 / Intel P4 3GHz / 2GB RAM / GeForce FX5200 / DeckLink Pro / Sony BVM-20G1E / DVS SDI Clipstation / 110GB boot/80GB media/600GB RAID-0

    Jimmy Brunger replied 19 years ago 4 Members · 5 Replies
  • 5 Replies
  • Kevin Camp

    May 2, 2007 at 4:18 pm

    i’ve had that happen too, i ended up just living with it (i may have reduced the shutter angle to minimize the effect).

    depending on your cube move, you may be able to fake motion blur with the motion blur effect. echo (and potentially frame blending) could give you multiple frames as the cube rotates to blend together. combine that with a bit of a directional blur to soften the edges and that might work.

    reelsmart motion blur from re:vision would help too.

    Kevin Camp
    Designer – KCPQ, KMYQ & KRCW

  • Darby Edelen

    May 2, 2007 at 4:44 pm

    I don’t know that this will solve your problem, but I’m curious as to the outcome anyway.

    Maybe try changing the blending mode of the layers that make up the cube to Alpha Add? Again, not sure if that will solve it, but its my best guess =)

  • Jimmy Brunger

    May 3, 2007 at 8:15 am

    No, no joy I’m afraid. Thanks for the suggestions though. Seems a bit rubbish this!…I’m sure I accidently made it work yesterday by pre-comping it on an already animated null, but then when I went back to set it up from scratch it wouldn’t work!!??!

    Any other thoughts guys?

    *Production Studio Premium / *Combustion 3
    ————————————-
    Win XP Pro SP2 / Intel P4 3GHz / 2GB RAM / GeForce FX5200 / DeckLink Pro / Sony BVM-20G1E / DVS SDI Clipstation / 110GB boot/80GB media/600GB RAID-0

  • Sam Moulton

    May 3, 2007 at 7:17 pm

    Pre-compose and use CC force motion blur.

  • Jimmy Brunger

    May 4, 2007 at 12:13 pm

    Excellent! Cheers for that. So does that plugin properly determine the blur based on the motion of the layer, just like normal mo-blur?

    *Production Studio Premium / *Combustion 3
    ————————————-
    Win XP Pro SP2 / Intel P4 3GHz / 2GB RAM / GeForce FX5200 / DeckLink Pro / Sony BVM-20G1E / DVS SDI Clipstation / 110GB boot/80GB media/600GB RAID-0

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