Raf256 wrote:
>> would end up not taking samples, which would unbalance the distribution
>> as a whole. This in turn would create some strong but unpredictable
>> (probably appearing randomly and visual as noise) bias in the samples.
>> Obviously this would make things a lot worse.
> 
> Concider checker plane y,0 with too small scale, it is very very aliased,
> and if we are unlucky then in example first 4 rays could gave identical
> result quickly fooling statistical function.

You don't fix aliasing by taking *fewer* samples, but by taking *more* 
samples.  If you are having problems with too few samples being taken, you 
have poor settings for the focal blur variance.  Taking fewer samples will 
certainly *not* improve the result.

	Thorsten

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