The Lensbaby Creative Aperture Kit gives you creative control over the shape of the spherical highlights in your Lensbaby photos. Each Lensbaby Creative Aperture Kit contains one f/4 star aperture, one f/4 heart aperture and five blank disks that you can cut into custom shapes. The disks work with the Lensbaby 3G and Lensbaby 2.0 lenses.
With the Lensbaby Creative Aperture Disks, points of light in out of focus areas of your photo take on the shape of the center opening of the aperture disk. With the star aperture, points of light behind the subject appear as glowing stars. You can fashion the blank disks into your own custom shaped apertures using a shaped paper punch (which you can find at a craft store) or a sharp knife.
The Lensbaby Creative Aperture Disks are made out of the same metalicized plastic as your regular Lensbaby 2.0 and Lensbaby 3G aperture disks. Just drop them in the front of your lens and you are ready to go.