Muybridge: Shooting a Moving Target : #animation This was quite a feat, given the cumbersome process of photography in those days. (Think glass negatives and chemical baths.) Muybridge had to trick out cameras that could take a number of photos in succession and create a device that could flash them in front of the viewer’s eye. For this, he invented the zoopraxiscope, which you can see in all its steampunk splendor at the Corcoran Gallery in Washington. The exhibit “Helios: Eadweard Muybridge in a Time of Change” runs through Sunday.