Thomas de Groot <tho### [at] degrootorg> wrote:
> Op 21-4-2021 om 15:47 schreef Mr:
> > Getting closer indeed! Now it has much more scale variations. Credit
> > (unwillingly :-P) deserved by Ive for showing us merits of the original files.
> > It might appear one could still prefer Ive's restored original version for the
> > single occurrences showed. At least its contrast curve could stay the reference.
> >
> Yes, as reference certainly, in combination with what I can find on the
> internet I want to stress.
>
> > But as you geologist said, its bigger scale is misleading. For having struggled
> > to do something that stays consistent at various scales, I know that you're
> > tackling something more demanding but keep hope, do not give up, try to reach an
> > as pleasing color curve. Theoretically, it could even get better than the
> > original as the new pov version can produce more nuances. I believe at this
> > stage showing both the current one and a much closer up framed render would do
> > it justice.
> >
> indeed.
>
> > *Saturation of the colors should be slighly more and brightness slightly less,
> > but don't look at the picture straight out of the renderer, only after applying
> > it the gamma above 1.8 and below 2.5. if your rendered frame display gamma
> > doesn't do that. I would try playing either in very small amounts with the
> > brilliance keyword. or switch to another shading model if they did get
> > implemented since Uberpov? if they haven't the #brilliance shift kind of does
> > that "shading model translation" (OrenNayar Blinn would have sigmas for various
> > rocks well referenced I think).
> >
> Yes, more tweaking needed here indeed, saturation and brightness.
> Display_Gamma is set as sRGB since the days of Clipka at least.
>
> > *The specularity looks somewhat wrong sorry to be that vague: did you use
> > specular or phong, because what I more clearly meant was that it looks like
> > phong : too blurry.
> >
> I don't/never use phong, only specular
> >
> > Now it's just all bonus, though, the material feels really official includable
> > level already!
> >
> Thanks! :-)
>
> > Thanks for your work !
> >
> I am getting adicted! ;-)
>
> --
> Thomas

Also, sorry , but ignore the part of my comment about brightness or saturation,
I am not sure of any such thing until I see more close ups or render them myself
if I get some time. However, to push further on the scale variation, I thing the
biggest salmon colour splotches are still  too frequent when looking at
reference photo don't they occur slightly less frequently / more distant from
each other?  ... but your eye should be more expert about this.

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