In article <390A0B46.AEDCEB12@stud.ntnu.no>, Sigmund Kyrre Aas 
<as### [at] studntnuno> wrote:

> Catching up on the other threads here I found that you've already 
> mentioned this. Levels wouldn't be the same as 
> highlight/midtone/shadow because it's dynamic; it changes according 
> to the darkest/brightest pixel. The highlight/midtone/shadow will 
> change the colour values regardless of the image.
> I think this could make the levels process very useful since we don't 
> have the fast preview capabilites of image editing programs.

How about a filter that can take either 2 or 4 colors, if 2 colors, then 
it would adjust the colors of the image so the brightest is equal to the 
second color and the dimmest equal to the first. If 4 colors, it would 
override that "auto adjust" and adjust the image as if the two 
additional colors are the dimmest and brightest colors.
Is this what you want?

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
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