"ingo" <ing### [at] homenl> wrote in message
news:Xns### [at] povrayorg...
> Histograms of the different noise_generators, one with the granite
> pigment, the other with pigment{function{f_noise3d}}. Images rendered
> to gamma=1.
>  Maybe usefull in the docs, section "6.7.12.4".

Wow, that really exposes what's going on there.  The spike along the far
right edge of the first one looks really out of place, unless that's some
flaw in your images.

Bob H.

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