Motion blurr simulated by jittering in time domain
Light difraction simulated by distribution in wavelength domain
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Original picture (320x320, anti-aliasing)
Distribution on the lens area (diameter: 80 pixels, Poisson disk sampling) with
anti-aliasing (jittering);
uncorrelated (stratified) sampling (320x320, 4 samples per pixel)
Distribution on the lens area (diameter: 60 pixels, Poisson disk sampling) with
anti-aliasing (jittering);
uncorrelated (stratified) sampling (320x320, 100 samples per pixel)