A good illustration. However, I wouldn't say that 02 and 03 are "overall" lightening and darkening curves. The end points remain fixed. They are midrange lightening and darkening curves. Because the ends are ffixed, the brightest highlights and deepest shadows remain unchanged. Rather than calling 04 a "gamma correction curve," which cold be anything, I would describe it as a curve intended to increase midrange contrast. Once again, the ends are fixed.
On Oct 18, 2005, at 12:04 AM, Boris Liberman wrote:

Hi!

- Boris, all is revealed at
   http://homepage.mac.com/godders/grayscale20051017/

Great many thanks... I will try to keep in mind the word "beer" if we get to meet in person. Please don't remove that page from your web site, will you?

Boris


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