The Lumiere brothers attempted 3D films even before they properly started with 2D ones (iirc). It's hypothesized that, with old accounts of Lumieres' enterpris

The Lumiere brothers attempted 3D films even before they properly started with 2D ones (iirc). It's hypothesized that, with old accounts of Lumieres' enterprise being very messy, the 2D premiere of ‘The Arrival’ was conflated with the 3D showing, and that's where we get the stories of the audience panicking about the train.