A common question I get from photographers starting a new website is whether they need to include some text on gallery pages, above or below the thumbnails. And what to write about.
The answer is a strong YES. Each gallery on your photography website should ideally have a description at the top, above the thumbnails, explaining what the images are all about.
It can be a small paragraph of text, or a longer block of text if needed. If you feel it takes up too much vertical space (pushing the thumbnails too low on the page), you can just show a small preview of that text with a “more/expand” button.