What are the different types of photo captions?

Photo captions can be categorized into several types, including descriptive captions, which provide factual details about the image; interpretive captions, which offer insights or context; and humorous captions, which add a lighthearted or witty element. Additionally, there are promotional captions aimed at marketing or advertising purposes, as well as storytelling captions that narrate a story related to the image. Each type serves a distinct purpose, enhancing the viewer's understanding or engagement with the photograph.