Chris Godfrey, VFX Supervisor on the film The Great Gatsby, recently released a 4 minute clip of before and after shots from the movie.
The sweeps reveal the sheer amount of post production that goes into a Hollywood movie like this. As a viewer, we know the movie magic is happening and that the heavy amount of FX are standard in blockbusters that hit the silver screens. It is interesting seing how some of the wide shots were prepped for the settings to be dropped in, there also seems to be some of the tricky camera moves that happened with moving vehicles.
There is no secret that the FX's are happening, seeing it unfold give us the magnatude of how much work goes into it. Even if it is shot on nothing but a green screened room. In all, 7 different teams worked on the massive amount of green screens including Animal Logic, Rising Sun and Iloura in Australia, ILM in San Francisco and Prime Focus and Method in Vancouver.
Via - Shockblast