Fire in X-Men: Days of Future Past
Fire effects are important in sci-fi and even action films. Luckily, they have vastly improved over the years. As you can see here, we can see just how intense this scene was!
Of course, it makes sense to use CGI on something that can cause so much damage. We are glad to hear that actors are no longer put in dangerous situations for the sake of their art.
The Backgrounds in The Hobbit
Some fans did not like the CGI they used in the film because the Lord of the Rings trilogy accomplished so much without relying on effects. At any rate, it made the movie feel more whimsical.
The film was largely shot inside studios, so they had to replace the skylines too. Despite the limited sets, they created some breathtakingly beautiful scenes!