This page shows a comparison of several
sampling schemes for motion blur. All images use 16 samples per pixel.
The Accumulation Buffer approach uses the same sampling pattern for all pixels. This results in aliasing effects that show up as multiple copies of the objects.
Random Sampling replaces the aliasing with noise, which is perceptually less disturbing, but still quite visible for low sampling rates.
Interleaved Sampling produces the best visual quality.
