Sometimes we don't have a picture that goes with the hub we write when we write it. If you have a hub that is months, or even years old with no photo and then you add a photo to it; does it help bring in more page views?
Yes, in the general sense, the answer is definitely "yes."
It is a very good idea to look at old hubs and think about how to make them more attractive or otherwise more effective, and adding a better picture or adding a picture where there was none - freshens up the page.
The bots crawl the page, they see fresh content, and suddenly Google ranks the page up a bit.
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