For the technical aspects of your production and special effects responsible is studio (the more expensive the, by default, better). Post production is an additional opportunity to enrich our film with advanced special effects (CGI). This option is only available in the best (the most expensive) studio. Of course, the better the (more expensive) studio, the more advanced special effects it allows to create.
The player during production of the film can devote an appropriate part of the budget for this item. Post production in addition to the impact on the production budget also increases the time of film production.
A positive aspect of the post production is increasing its advertising potential. This means that it can be more advertise.
You can also get the An Oscar for special effects.
Element associated with the concept of post production are post-production effects, that allow you to apply visual effects to images of the creators.