Loading...
> >

What causes this Render flaw?

lexbairdlexbaird Posts: 168
in Technical Help (nuts n bolts)

I've gotten similar artifacts from time to time, and would like to know what causes it.

The light set up: 3-delight with 3 distant lights (key, fill, rim) and 1 spot. Spot set to "no shadows". Shadow Bias: 1.00

Render settings: Progressive; Bucket: 8, spiral; Max raytrace depth: 1; Shadow Samples: 32; Shading Rate: 0.20; 1236px x 2000px

Note that when rendered from a different camera angle, the artifact disappears. The flaw does not appear to follow the mesh geometry (G3F)

Comments

  • scorpioscorpio Posts: 8,533

    Try lowering your shadow bias

  • alkenalken Posts: 269

    This happens to me when depth of field is turned on and i'm test rendering.  Once I do the real render those anomalities go away. Hope this makes sense.

  • lexbairdlexbaird Posts: 168
    edited September 2016

    Alken, this is happening in my final render (actually, this is a spot render of the same flaw after I tried a few different settings, but it was showing in the final render.)

    Scorpio: I'll give it a try, but as I understand it, shadow bias flaws are caused by self-shadowing and look like the underlaying mesh. I dunno what would be casting on itself in that area. Is there a recommended setting? 1.00 is the default, and one try at it was set to .50.

    Post edited by lexbaird on
Sign In or Register to comment.