IrisFilter2.8 for Photoshop

Photograph: Reiji Sakurai with IrisFilter2.8
For Photographers
The IrisFilter algorithm was developed by Reiji Sakurai, a photographer who wanted to modify the focal properties of photgraphs in post production (patent pending).
Using IrisFilter, you can emulate real out-of-focus effects otherwise possible only with an actual camera. Now you too can use beautifully defocussed images for a background in your work. Since this tool is like a virtual camera, you can enjoy changing the shape of the iris to whatever shape you want - a circle, pentagon, hexagon, octagon, heart shape, diamond shape, or any pattern you choose.

Sakurai Optical Lab.