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Carrara rendering issues

circular05circular05 Posts: 0
edited December 1969 in Carrara Discussion

I'm having these issues with rendering: Thin objects are rendered with holes, and there is quite a bit of aliasing when I use the Aura effect. Here is my image: Render problems

My render AA settings seem to be maxed out at Best/4px/4px.

Thanks! Enjoying 8.5 so far after some initial hesitation. It seems very solid here on OS X Lion.

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Comments

  • araneldonaraneldon Posts: 712
    edited December 1969

    Your AA may be maxed but you got the other two backwards. Smaller is better for the accuracy settings :)

  • circular05circular05 Posts: 0
    edited December 1969

    Thank you, I'm coming from another 3D app where larger is better (rays per pixel AA setting) so that's fixed the antennae. The aura shows the same problem as before, unfortunately.

  • evilproducerevilproducer Posts: 9,050
    edited September 2013

    circular05 said:
    Thank you, I'm coming from another 3D app where larger is better (rays per pixel AA setting) so that's fixed the antennae. The aura shows the same problem as before, unfortunately.

    The aura has had that issue for quite awhile. Have you tried rendering using the Multi-Pass options in the Render room? There's one for Glow. There's also one for Post effect which is what the aura is.

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    Post edited by evilproducer on
  • EddyMI3DEddyMI3D Posts: 365
    edited December 1969

    For this really thin antennas you should use Best/0.5px/0.5px
    I also use this settings with portraits and dynamic hair.
    I takes more time but the result is worth it.

  • circular05circular05 Posts: 0
    edited December 1969

    Thanks, I am trying out multi-pass for the aura. Basically I am just getting a render of aura with bad antialiasing, and I'm not totally sure how multi-pass works, but this will be easier to work with than the full composited image.

  • evilproducerevilproducer Posts: 9,050
    edited December 1969

    circular05 said:
    Thanks, I am trying out multi-pass for the aura. Basically I am just getting a render of aura with bad antialiasing, and I'm not totally sure how multi-pass works, but this will be easier to work with than the full composited image.

    You could may be able to blur the effect in post. I don't think the aura is anti-aliased. If it is, it's not much. I usually use it in animations where the eye doesn't have the time to linger and see it.

    You may have another alternative. The following picture uses three spheres for the earth. One with the surface, one with the cloud layer, and one for the atmosphere with the alpha adjusted so that it's darn near invisible with a light blue in the color channel. I copied that to the glow channel. I then went to the sphere's effects tab and enabled the aura, went into the editor and dialed down the intensity pretty low, I also increased the spread and turned on distance attenuation. If I can find the scene I'll post the exact settings. The atmosphere sphere is just a couple units larger than the cloud sphere.

    You may not need three sphere's but maybe a second slightly larger sphere around the planet will help.

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  • circular05circular05 Posts: 0
    edited December 1969

    That sounds a bit like the method I'm currently using. No clouds layer, but an atmosphere layer for the glow and a diffuse surface layer. I did notice that if I add more power to the aura effect, the aliasing is sort of blown away, so maybe I'll experiment more with that. Thanks.

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