Setting the image type to "photo" will bring up the images the article is talking about. So does searching for "imgsrc" (without spaces) and "img src" (with quotes), even without the type filter.
The IMDB example in the Entertainment section is showing a pretty weird result for "Shawshank Redemption". Instead of the well known movie, the highlighted result is an episode of a quite obscure TV series ("Dating a Puppet").
-- Edit: I've just noticed the query goes straight to imdbapi.com, which returns the same results when searching for "Shawshank Redemption", without the "The" prefix. Which is still a bit weird, but has nothing to do with DDG.