How to write the caption of photographic works?

The introduction of a work should be based on helping the viewer to better understand the work, and the introduction can be formed according to the following elements:

1, the title of the photographic work. According to the content of the work, if it is a group film, it is necessary to extract a suitable theme according to the reflection of this group of photos, and make a little finishing touch.

2. Briefly explain the core content and background, and you can bring a sentence that the photographer or editor intends to express.

For example:

If it is landscape photography, or simple portrait photography, it exists to express aesthetic feeling, and it doesn't matter without words. But if you are news photography or documentary photography.

Then I'm afraid you can still, or should add some words to briefly describe its background story and other information that can't be expressed in other pictures. In other words, sometimes words need to be added, but sometimes, whether words need to be added depends on the situation.