By the way: > What most film histories leave out is that the Lumière Brothers were trying to achieve a 3D image even prior to this first-ever public exhibition

By the way: > What most film histories leave out is that the Lumière Brothers were trying to achieve a 3D image even prior to this first-ever public exhibition of motion pictures. Louis Lumière eventually re-shot L'Arrivée d’un Train with a stereoscopic film camera and exhibited it (along with a series of other 3D shorts) at a 1934 meeting of the French Academy of Science. Given the contradictory accounts that plague early cinema and pre-cinema accounts, it's plausible that early cinema historians conflated the audience reactions at these separate screenings of L'Arrivée d’un Train. The intense audience reaction fits better with the latter exhibition, when the train apparently was actually coming out of the screen at the audience. But due to the fact that the 3D film never took off commercially as the conventional 2D version did, including such details would not make for a compelling myth. (https://en.m.wikipedia.org/wiki/L%27Arriv%C3%A9e_d%27un_train_en_gare_de_La_Ciotat#3D_version https://en.m.wikipedia.org/wiki/L%27Arriv%C3%A9e_d%27un_trai...)