In Google Image publishing guidelines there is a paragraph about landing page for each image:
Even if your image appears on several pages on your site, consider creating a standalone landing page for each image, where you can gather all its related information. If you do this, be sure to provide unique information — such as descriptive titles and captions — on each page. You could also enable comments, discussions, or ratings for each picture.
I am wondering in what scenarios this might be beneficial. If Google indexes the landing page for an image, instead of the article where this image is used; it doesn't seem like a good user experience.
E.g: I do an image search for pancakes; and I visit the page that has this image. I would prefer to be taken to a page about pancakes or pancake recipes; not about the pancake image. "Here is an image showing a pancake, it has a width of X and a height of Y. And people like this image (high rating)." Fine; but what about the actual pancake, do people like that?
So; in what scenarios might a standalone landing page for each image be beneficial?