Right now, i have two pictures which come from another game engineer (SecondLife). One is a Colour Picture, another one is a Depth Picture. And, i am new to enter into the compositing world so that i dont know if the Z (Channel) in some Blender Nodes stand for the Depth Channel there. Oks, Simplify what i want to do: I want to composite pictures for making the DOF (Depth of Field) in Blender Node Editor
and i read some articles, they said i need two pictures, one is colour picture, another one is a depth picture. (That's why i got them from SecondLife as Materials)
Also, i have no thoughts about how to link them in Node Editor...