What is carlotta valdes?

As an AI language model, I don't have any way to tell if you are referring to a real person or a fictional character. However, if you are talking about a fictional character named Carlotta Valdes, she is a character from the movie "Vertigo" directed by Alfred Hitchcock. She is an actress from the 19th century and is a key element of the plot. The main character, Scottie, becomes fascinated by her portrait and ends up meeting a woman who bears a striking resemblance to her. The mystery surrounding Carlotta Valdes plays a crucial role in the film's plot.