Maybe it's because I'm tired, but I have no idea what you or anyone else
has said in this thread, but these picture are cool. :)

Ansel Adams would be proud (wiping tear from eye)

-Mike

Bob Hughes wrote:
> 
> That's quite something there Spider, the blue perimeter box is markedly
> different from one image to the other. And I see other differences too,
> like the red shadow and it seems the yellow/magenta gradient doesn't
> convert to light and dark gray or it's just a visual perception thing.
> Have you done a grayscale image conversion to compare?
> Like the perfume bottle too, Johannes. Very fitting in B&W. I'm tempted
> to tease about the sky color being also the bottle color perhaps if a
> person didn't know about the color picture.
> I wanted to show a gamma related picture as well as the black and white.
> The b&w method is by way of hf_gray_16 output into a png. My
> Display_Gamma is always 2.2, except when doing the center image I
> removed it from Povray.ini and restarted POV to be sure it reset.
> Picture was originally 24-bit color png and image_mapped using only
> ambient 1 finish without any lights.
> Now my thoughts on it...
> The leftmost image is a washed out low-contrast mess. The middle one is
> what I would normally see if I don't adjust any gamma up or down. And
> the one at right is darker than I would usually ever do, except that in
> this instance I was trying for a high-contrast, glossy-photo look, while
> at the same time trying to show the better side of gamma correction,
> imho.
> The increased global ambient_light helped to brighten parts while the
> larger gamma number darkened it overall.
> Here's the lights used in the original image:
> 
> light_source { -60*z color Sunshi_*.8 //Sunshi_ is rgb <0.99, 0.98,
> 0.97>
>         //area_light <9,0,0>,<0,9,0>,3,3
>          rotate <22.5,-67.5,0>}
> light_source { -60*z color W40*.8 //W40 is rgb 0.4
>         //area_light <9,0,0>,<0,9,0>,3,3
>          rotate <15,30,0>}
> light_source { -60*z color rgb<.1,.125,.15> rotate <-1,-20,0>}
> 
> Together these are less than the rgb 1.5 total I use most often.
> 
> --
>  omniVERSE: beyond the universe
>   http://members.aol.com/inversez/POVring.htm
>  mailto:inv### [at] aolcom?PoV
> 
>   ------------------------------------------------------------------------
>  [Image]

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