# Special Effects session IV - Practical Effects

In the previous lesson you learned about CGI and how CGI effects movies nowadays. In this lesson you will see and hear about movies that came out quite recently. You will see how, instead of using computers, film makers use practical effects. Practical effects are the effects made with real life objects. For example, movie producers can choose to use real explosives and fire instead of fake explosions made and shaped on a computer. Prosthetic make-up used to change or add on to the body of an actor changes their appearance. Optical . If you have seen movies like The Dark Knight, Inception or Interstellar, you will notice that there are a lot of shots that are impossible in real life. The director, Christopher Nolan, doesn't always like to use CGI. That is why a lot of his movies use real life effects to create the shots for his movies. A spinning hallway or exploding objects in the streets of Paris.