Passage de Venus is a series of photographs of the transit of the planet Venus across the Sun in 1874. They were purportedly taken in Japan by the French astronomer Pierre Janssen using his 'photographic revolver'.
It is the oldest film on IMDb.
A 2005 study of the surviving material concluded that all the extant plates made with the photographic revolver are practice plates shot with a model and that none of the many plates successfully exposed during the eclipse seem to have survived.