This pleasing optical result is referred to in photographic terms as Bokeh. This filter includes a pop-up that can be used to match the different looks that can be achieved in the physical world based on the lens aperture setting. When a lens is used at it’s maximum aperture (fully open / set to the smallest f stop number) the out of focus highlights are typically in the shape of a circle, however, when the lens is stopped down (set to something other than the smallest f stop number) the blades inside the lens shape the out of focus highlights into multi-sided shapes. The BCC Lens Blur filter emulates a lens blur defocus/rackfocus effect where out of focus highlights of an image clip take on the shape of the lens diaphragm. The newer BCC Fast Lens Blur is fully GPU accelerated using OpenCL and provides the same feature set but with much faster rendering.
We recommend use of BCC Fast Lens Blur instead of BCC Lens Blur in BCC10 and higher. Deprecated – replaced by BCC Fast Lens Blur
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