Currently there are hundreds of millions (high-quality) images in online image repositories such as Flickr. This makes is necessary to develop new algorithms that allow for searching and browsing in those large-scale databases. In this work we explore deep networks for deriving a low-dimensional image representation appropriate for image retrieval. A deep network consisting of multiple layers of features aims to capture higher order correlations between basic image features. We will evaluate our approach on a real world large-scale image database and compare it to image representations based on topic models. Our results show the suitability of the approach for very large databases.