For furthering refining the already unique appearance of imagery created by Lomography's Petzval lens, this set of Petzval Special Aperture Plates can be used to produce distinctively shaped bokeh in out-of-focus highlights. This set includes three plates with pre-cut shapes-teardrop, star, and honeycomb-as well as one blank plate that can be cut to your own desired aperture shape.
These plates serves as alternates to the Waterhouse stops included with the Petzval lens itself, and are inserted into the lens prior to making your exposure.