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render artifacts? How to get rid of them?

FetitoFetito Posts: 481
edited February 2015 in Daz Studio Discussion

Help! There are some strange render artefacts in some images of a sequence that I am rendering.

I put an okay rendering and a troubled one. 39 pictures are okay, but two are weird.

Which option do I have to tweak in DAZ in order to get rid of them?

PD: If I render the same image again, the same green face appears.

intro-elsa54.png
1920 x 1080 - 1M
intro-elsa55.png
1920 x 1080 - 1M
Post edited by Fetito on

Comments

  • fixmypcmikefixmypcmike Posts: 19,612
    edited December 1969

    Does the face use AoA's SSS shader?

  • FetitoFetito Posts: 481
    edited December 1969

    I think so. I took some screenshots of the surface options for the face-mesh.

    Untitled-4.png
    642 x 713 - 21K
    Untitled-3.png
    620 x 698 - 21K
    Untitled-2.png
    507 x 677 - 13K
    Untitled-1.png
    669 x 738 - 25K
  • Richard HaseltineRichard Haseltine Posts: 102,718
    edited December 1969

    Do you have lights with Depth-mapped shadows, or no shadows?

  • FetitoFetito Posts: 481
    edited December 1969

    Ummm, where do I check that? (I am not at home right now and my ISP crashed for days)

    I used a preset from "Core Lighting 1" http://www.daz3d.com/core-lighting-1

    Shall I change to raytraced shadows?

  • Richard HaseltineRichard Haseltine Posts: 102,718
    edited December 1969

    Try, yes - it's in Shadow Type on the light settings, and I've a feeling at least some of those light sets did use mapped shadows.

  • FetitoFetito Posts: 481
    edited December 1969

    Yay! I'll try so once I get home. I have ISP-issues right now, so I will reply tomorrow if your wise suggestion has success. :)

  • FetitoFetito Posts: 481
    edited December 1969

    @Richard Haseltine: Yay! You rule! I changed it to raytracing. Issue has been resolved.

    What happened what was wrong?

  • Richard HaseltineRichard Haseltine Posts: 102,718
    edited December 1969

    Depth Mapped Shadows have had issues for a while - it's a 3Delight (or possibly a Renderman in general) issue, though I'm not sure why it hadn't been apparent until relatively recently. That seems to be part of the motivation for getting the performance of ray-traced shadows up.

  • FetitoFetito Posts: 481
    edited December 1969

    Using raytraced shadows are so much faster on my machine. Is that working as intended? Instead of 40 minutes, one image takes 5 minutes.

  • Richard HaseltineRichard Haseltine Posts: 102,718
    edited February 2015

    That's unusual but not impossible, especially as there's only a little hair with multiple semi-transparent layers to slow the process down.

    Post edited by Richard Haseltine on
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