Lensbaby-Creative aperture disks have shapes cut out of them, and drop into the front of a Lensbaby lens just like regular Lensbaby aperture disks. The shape will appear anywhere bright points of light (specular highlights) are out of focus (ie, decorative lights at night or the sun shining through leaves) in an image. This effect is visible through the viewfinder. The shapes in the Creative Aperture Kit include one of each of the following: birds, diamonds, dripsplat, heart, slots, star, swirly, sunburst and whirlpool. The Creative Aperture Kit 2 is compatible with the Lensbaby Double Glass, Single Glass, Plastic and Soft Focus Optics.