I just got a Holga this winter and what fun it is to make photos that are not PerFect! Using this filter set is just one way to make your images interesting and dreamy. They slip right into the filter holder making color changes easy to do. Right now, my favorite filter color is the one that grays out the edges and leaves the center clear, making the focus of the shot the true center of you attention. Playing with the Holga and the filters makes waiting for processing the photos as exciting as when I was a kid and had my first Instamatic. You just gotta have a set of these filters for full photo fun!