DOF PRO is the result of ongoing research, development and programming collaboration between Richard Rosenman and Martin Vicanek in an effort to produce a Photoshop® compliant plugin capable of delivering high quality, sophisticated Depth of Field and Bokeh effects quickly and efficiently as a post process. Depth of field (DOF) is the amount of distance between the nearest and furthest objects that appear in acceptably sharp focus as seen by a camera lens. This field varies with the focal length of the lens, its f-stop setting, and the object distance from the camera. 
The term"bokeh".which in Japanese literally means "blurring", has been introduced into the film, photography and computer graphics industries to describe these particular out-of-focus blur characteristics. It is determined mainly by the shape of the camera lens and can be best seen on out-of-focus highlights which assume the shape of the lens aperture. A lens with few aperture diaphragm blades (say 5) tends to produce pentagonal highlights, whereas a lens with more aperture blades (say 7-8) tends to produce rounder (heptagonal/octagonal) highlights. Ultimately, a higher number of aperture blades will produce more circular highlights. 
DOF PRO now offers the capability to independently control the spherical aberration edge thickness. an important characteristic of optically-correct bokeh effects. This results in crisp bokeh edges matching real-world bokeh abnormalities. 
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