Thanks for your answer agiel:) I have just done something similar to what you said and it worked... This is what I did... I opened up the Multipass render in Photoshop CS2, went to the z_depth layer, selected all then moved over to the Channels tab and selected the Default Alpha Vue created and Pasted my selection there, and all my range of greys and whites were transferred across. Now I can click anywhere on the image and try different focal points in the image like that plug-in you got:)