Attached Link: shadow bias

Sorry for the delayed answer...I don't enable email notification for every thread, I hate overflooding mailboxes.. Anyhow, the explanation of the shadow bias: Quick explanation: It is the value of how close an object can come to a surface and still cast a shadow. When you set the value too small, self-shadowing will occur. When you set it too high, shadows will not start where the two objects meet. Long explanation: See "Advanced Animation and Rendering techniques", pages 166 through 171. And no, it's nothing Poser specific. as far as I know, every renderer using shadow maps has such a value (not everyone may expose it to the user, though). I attached a link showing examples of shadow map bias in an early version of 3ds max.