This guy just slides onto the lens of any Holga and expands the field of view by quite a bit! A fun addition to your Holga collection, we’ve found that the extra wide angle adds even more vignette and a slight distortion (in a good way) to the images… a great lens at a great price- and a welcome addition to your camera bag. Check out some examples: the first shot is the regular Holga lens, the second shot is with the wide lens attached.