The highlight of cBlur is that the entire calculation can take into account the diffraction of light at the aperture. This leads not only to more realistic results but also allows cBlur to calculate a diffraction based hyperfocal distance.
Even if cBlur looks a little complex at first, it is also very good for beginners who still not really know how the relationships are that determine the distribution of sharpness. More information about that can be found in the tutorial.
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