I just wanted to show an example of my PS use. In this render I will notice a minor poke through 45 minutes of a multi hour render. Do I really want to quit, re open ds, reload my scene adjust the pump and re start the render from scratch when I can let it finish load it in ps circle it and fill it in. In the end both will look the same. The same applies for those little pesky noise specs that sometimes refuse to leave...