The Double Glass II Optic from Lensbaby, the follow up to one of Lensbaby's earliest and most popular optics, is a 50mm optic with a 12-blade diaphragm and adjustable aperture of f/2.5 to f/22 that creates a "sweet spot" of focus surrounded by an impressionistic blend of blur and bokeh. The aperture adjustment on the front of the optic also controls the size of sweet spot, which grows larger as the more it's stopped down. Further expand the image's creative possibilities with nine specialty magnetic disks, featuring apertures in shapes such as the five-pointed star or heart, that render out-of-focus points of light with the same shape as the aperture. The optic is compatible with all of Lensbaby's current and legacy Optic Swap lens bodies and macro accessories.