468 Adding a ghost to your haunted mansion

- Alright, so at the last minute,…I decided this should be a haunted mansion,…which means of course that we need a ghost,…as we're seeing down here in the bottom right window.…And I'm going to show you exactly how…I created that ghost in this very movie.…And so, the first step was to go…to the Fotolia image library, about which…you can learn more, and get deals,…at fotolia.com/deke.…And run a search for "ghost."…And my favorite hit was this image here.…Now we need to select the ghost,…and the easiest way to do that…is to switch to the Channels panel,…so we can see what we have to work with.…

And you can see if I click on the Red channel,…the background is very light,…but it's even brighter in the Green channel,…and it's pretty much nonexistent in the Blue channel.…Which means that we can use it…all by itself to select this image.…And so I'll go ahead and click on "RGB"…to make it active once again, and then…I'll Control- or Command-Click on the Blue channel…to load it as a selection.…That goes ahead and selects the background,…