in news:3D0### [at] freefr Le Forgeron wrote:

> the equation for the .gray is bogus, it is given as
>    gray value = Red*58.9% + Green*11.4% + Blue*29.7%
 
> for the human eyes, it should be
>    gray value = Red*29.7% + Green*58.9% + Blue*11.4%
> 

What does the source say?

Ingo

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