...First of all, this GIF is based off of a sequence of self-portraits taken by Nadar in almost 360-degrees, but it’s probably safe to say that it was not originally intended to be GIFd. However, it’s title “Revolving” Self-Portrait does imply that it might be intended to be viewed as a sequence or in motion. In each of the twelve frames in the series, Nadar turns ever so slightly so that the camera can catch him from different angles in order to create an impression that the camera was tracking around him. I thought that this was a bit strange because it is unusual to see a photographic self portrait in this kind of sequence; although, he wasn’t the only one to do this–so did Eadweard Muybridge in his Self-portrait as man throwing, climbing and walking (1893) as part of his project to study the human body in motion. However, Nadar’s self portrait precedes Muybridge’s photographic series by almost 30 years. [https://digitalatheart.wordpress.com/2015/02/26/the-sequential-self-portrait/]