What is one way that animators have historically checked their poses

over the centuries, the technologies have naturally been refined: in the nineteenth century the first devices were born, the so-called kinetoscopes, fenachistoscopes or zoopraxiscopi, which allowed to animate the images drawn on disks or films that were rotated by hand.

answer; i believe the correct answer is (african masks);

this shot is an example of a movie still, or screenshot. movie stills are done by a photographer while the movie is being filmed with cameras. the stills are used for advertising in posters, websites, newspapers, and magazines.