Rendering light and object passes with AOVs

- [Instructor] AOVs, or Arbitrary Output Variables,…are a system of render passes and rendered layers in Arnold.…AOVs are very powerful and versatile.…We'll used them here to separate out…the illumination from each light in the scene…and also render out the backdrop separately.…That'll give us a lot of options in compositing later.…We'll begin by just setting up something…in the project window.…We're going to create a whole bunch of EXR files…in this exercise, and we want to keep them separate…from the rest of the files in the images folder.…

The ordinary way of doing that…from the render settings window doesn't work with AOVs,…so we've got to go into the File menu to the Project Window.…And here we have Primary Project Locations, images.…At the end of images add a slash and AOV…and this will save all of our renderings…into a sub-folder within the images folder.…Click Accept.…And now let's go into the Render Settings…and jump over to the AOVs tab.…

In the AOV Bbowser we have three columns.…AOV Groups is a list of categories.…