scott <sco### [at] scottcom> wrote:
> > It is my code.Real image is a photograph.the value of each pixel in real image
> > are like these:
> > 0.220900
> > 0.375800
> > 0.375800
> > 0.346500
> > 0.277700
> > 0.355800
> > 0.396900
> > 0.441800
> > 0.442800
> > 0.382300
> > I doublt this statement "pigment {color rgb spectral}"is wrong.spectral is
> > responsible to  "pov-ref.txt" which save the value of each pixel of real image.
>
> In general, writing "pigment{color rgb X}" does not mean the output
> image will have a pixel value of X. The value X tells POV how diffusely
> reflective the surface is, POV then uses the brightness of any lights,
> the relative position of the objects and surface normals to calculate
> what the pixel colour should be.
>
> If your goal is to match the brightness of POV's output with your photo,
> then I suggest you simply add a multiplier to your light source and
> tweak it until they match:
>
> #local FACTOR = 10.0;
> light_source {<sun_x,sun_y,sun_z>
>              color rgb <1.00229e-005,3.46021e-006,-5.65828e-007>*FACTOR }

I have modified my code:
" #local FACTOR = 10.0;
> light_source {<sun_x,sun_y,sun_z>
>              color rgb <1.00229e-005,3.46021e-006,-5.65828e-007>*FACTOR }"
I find the result is the same as "light_source {<sun_x,sun_y,sun_z>
>              color rgb <1.00229e-005,3.46021e-006,-5.65828e-007>",nor I mutiply 10
or 100,the result is not change.I 
am so confuse!

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