Setting blending modes and adjusting opacity

…In a compositing workflow, it is good to get all of your images in…and arranged or merged first and then…start to deal with their different blending modes.…And finally do things like color correction, using our mask to…dictate which colors or which objects are tweaked in our color correction.…I'll start out by double-clicking on Merge One.…And I'm going to set the Operation or Blending mode for the Ambient Occlusion.…I'll press one to make sure I'm showing only to that…point in my viewer and drop down under Operation and choose Multiply.…

We Multiply Ambient Occlusion over.…And what it does is to ground everything,…with a little bit of darkness in the corners.…Here's how this looks without it, for a comparison.…There's the straight beauty image.…And there it is with the Occlusion.…I'm pressing one while selecting different nodes to…show forward to that point in the viewer.…What I'll also do is select my nodes here in…the viewer, and press L for Layout, which organizes that graph.…I've got different ways of dealing with magnification in Nuke.…