Re: [Gimp-user] What is the scale of Levels?

2009-08-25 Thread Asif Lodhi
Hi David, Obviously, you're more concerned about the mailing list. I know about flame wars and never do that. I do 100% agree that I should have emailed him personally on his own email address instead of this list but it's really shocking to read your stern reply. Does the freedom to say what you

Re: [Gimp-user] What is the scale of Levels?

2009-08-24 Thread Asif Lodhi
Hi, On 8/23/09, dar...@chaosreigns.com wrote: I would believe only in a God that knows how to Dance. - Nietzsche Would you please stop using inappropriate language for God? -Asif ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU

Re: [Gimp-user] What is the scale of Levels?

2009-08-24 Thread David Gowers
On Tue, Aug 25, 2009 at 9:00 AM, Asif Lodhiasif.lo...@gmail.com wrote: Hi, On 8/23/09, dar...@chaosreigns.com wrote: I would believe only in a God that knows how to Dance. - Nietzsche Would you please stop using inappropriate language for God? Nietzsche also wrote God is dead. God remains

Re: [Gimp-user] What is the scale of Levels?

2009-08-24 Thread Patrick Horgan
Asif Lodhi wrote: Hi, On 8/23/09, dar...@chaosreigns.com wrote: "I would believe only in a God that knows how to Dance." - Nietzsche Would you please stop using inappropriate language for God? ?? How is this inappropriate to note that Nietzche said that?

Re: [Gimp-user] What is the scale of Levels?

2009-08-23 Thread Darxus
The answer appears to be: sRGB, the color space to which gimp defaults (unless you've specified another color space?). The formula for converting sRGB levels to relative luminance is in the sRGB spec. A table of the Levels and their corresponding relative luminance is here:

[Gimp-user] What is the scale of Levels?

2009-08-22 Thread Darxus
I'm looking for a mathematical definition of this scale. http://docs.gimp.org/en/gimp-tool-levels.html says 0 is black and 255 is white. What's in between? Is 7 double the brightness of 6? What is the luminance / brightness of each of the levels? Is it a logarithmic scale? -- Life is

Re: [Gimp-user] What is the scale of Levels?

2009-08-22 Thread David Gowers
On Sun, Aug 23, 2009 at 1:33 PM, dar...@chaosreigns.com wrote: I'm looking for a mathematical definition of this scale. http://docs.gimp.org/en/gimp-tool-levels.html says 0 is black and 255 is white.  What's in between?  Is 7 double the brightness of 6? Have you not experimented with it? 7 is