Mechanical effects in movies—also known as practical effects or physical effects—are physical illusions created on set while cameras are rolling. Rather than being added digitally in post-production, these are tangible elements that the actors, crew, and cameras can directly interact with.

Sub-categories

• Breakaway props

• Atmospheric Effects

• Hydraulic rigs

• Pneumatic rigs

• Vehicle gags

• Moving set pieces

• Elevator effects

• Simulated impacts

• Wire pulls

• Falling objects

• Collapsing structures