Attached Link: http://www.daz3d.com/support/tutorial/index.php?id=891

1 is the triangle beside the render buttons. 2 & 3 are the Object and Distance mask settings. Click on the triangle, hold the left mouse button pressed, highlight one of them and release the button. At the link there's a simple Depth of Field tutorial for Poser at DAZ. The principles are completely the same. OTOH, you won't be able to do what I did. I will create a detailed tutorial on how to apply a selective DOF with Bryce and Photoshop.

-- erlik