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Activity Forums Maxon Cinema 4D 3d Noise in Alpha Channel

  • 3d Noise in Alpha Channel

    Posted by Brian Sneed on April 18, 2005 at 3:50 pm

    I am trying to produce something similar to the image seen

    I have been able to achieve similar results, but the
    varying sizes of spheres appear as thin “skins” with
    no volume. The individual steps in the images above
    appear to have some volume – or extruded properties.

    Just wondering if anyone can give me some insight on
    how I might be able to get similar results.

    Richard Powell replied 18 years, 5 months ago 4 Members · 4 Replies
  • 4 Replies
  • Adam Trachtenberg

    April 18, 2005 at 5:56 pm

    I’m guessing you probably need to use more spheres. Jeremy may have also used the same noise (clipped) in the bump channel to give an appearance of thickness.

  • Mark Simpson

    April 19, 2005 at 4:31 am

    I spent days trying to mimic those experiments a couple years ago… I had some pretty good success after ‘a lot’ of trial and error….

    Unfortunatley, I don’t remember the exact solution, but Adam is on the right track. You need to experiment with clipping and shadow, bump and displacement…But more than that, the effect is achieved through ‘lots’ of spheres…It becomes a render monster after a while. Be sure and up your ray depth and shadow depth too, otherwise only the first few spheres will render properly….(That drove me nuts for a while).

    Good Luck! if you’re like me, trying to duplicate Jeremys experimants will lead to a lot of your own ideas…Jeremys’ website is a boon to us normal cinema users as it encourages us mere mortals to push our imaginations into overdrive.It’s amazing thathe came up with these ideas when he did, considering where cinema was at and that no one else was doing that kind of stuff. He’s a very creative guy…

    He must also be very tenacious, because processors were pretty slow when he was doing that stuff in comparison to now.. You should get off a lot easier than I did, trying to do that stuff with a G3/350. I imagine whatever Jeremy originally used was even slower than that.

    Mark Simpson

  • Brian Sneed

    April 19, 2005 at 5:26 am

    Thank you very much, Adam and Mark, for you responses.
    Thanks to your suggestions, I’m getting closer – but very slowly.
    I hadn’t tried using the bump or displacement channels. Probably
    just my inexperience; I’ve only been learning C4d for about
    4 months. I will also look into the shadow and ray depth settings.

    Trying to duplicate these experiments has surely helped me learn
    a lot. I was pretty successful with the “3D Noise on a volumetric light”
    experiment, and that really motivated me to trying some of the others.

    I hadn’t really noticed, until just yesterday, that these were done about
    3-4 years ago. Wow, he must have been very patient. I was very fortunate
    to have purchased a G5 2.5MHz machine about 2 months ago – before
    I started playing with these experiments. I can’t imagine using a G3/350!!

    Anyway, I will continue on with this path to learning C4d. If you know of
    any other sources for tutorials/inspiration, I would appreciate a “heads up”.

    Thanks again guys.

  • Richard Powell

    April 23, 2005 at 7:47 pm

    He was on a dual 800 g4 iirc. I went down this gopher-hole for a few days same time as Marc back in 2002.

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