"jhu" <nomail@nomail> wrote:
> "CAS" <sup### [at] cstnetcn> wrote:
> > I want to ask how should I set the value of ambient and diffuse ?
> > "pigment {color rgb spectral}" I only used the reflection of object . I do not
> > need to consider the ambient and diffuse ,but I want to ask whether  need I to
> > set the parameters of ambient and diffuse ?If need, "#default{ finish{ ambient
> > 0.1 diffuse 0.9 }}"is OK?
>
> It's up to you. Does your scene look fine to you?

The image of output is what I needed. Then I use the histogram to statistic the
image which output by pov. However, the profile of image is shaking so intensive
between some range. What reseasons may cause this phenomenon ?

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