Z combine problem

HOW CAN OI FIX THIS ISSUE?http://s14.postimage.org/usidmpgkw/Z_COMBINE_ISSUE.jpg

Beetween brown and gray cubes there are stright edges… I mix them with z combine but it don’t works fine. Help me

I think the issue is that the alpha or z channel is not anti-aliased. I f you set in Scene Setting (where Render Settings are) The Anti-Aliasing to Full-Sample it should give nice edge.

hi,
i render with full-sample and premultiplied alpha but when i composite with z combine something strange happens: if i read image node with coposite type i see good anti aliasing; if i change the node in renderlayer view it become jiggled…

“if i read image node with coposite type i see good anti aliasing; if i change the node in renderlayer view it become jiggled…” - what do you mean by this, especially the last part?

EDIT: Yeah, you’re right. The Compositor Node looks different as View Node. Probably View Node has some short-cuts in order of speed.