Thanks for your UNVALUABLE help, Tamlin :roll:
Sorry to bother you again...
Also I've read that calibrating the NEC to the sRGB Gamma Curve instead the L* Curve can decrease the saturation a bit and the result is better than the fixed sRGB preset mode. Do you know something about this? And if yes, can you explain in detail for dummies? (I have no idea about monitor calibration) :oops:
I'll try to simplify it a bit if you don't have previous knowledge about this. Its hard though. :)
The gamma curve on a screen is actually a tonal response curve. You have probably seen pictures like this:
http://en.wikipedia.org/wiki/Image:Gamma06_600.png
The point at Origo (0) represent the darkest shades, while the point at top right represents the lightest. A color on the screen (and in the cones of your eyes) are build up by 3 primary colors: Red, Green and Blue.
On an 8-bit screen, each primary color have a range of 0-255. 0.0.0. is black, while 255.255.255 is white. The numbers mean that Red=0, Blue=0 and Green=0 when producing black. A shade is always made up by those 3 primaries on a screen.
If to think about black to white (greyscale), it goes in steps for each gradient: 0.0.0, 1.1.1, 2.2.2 etc. If you adjust the tonal response curve (gamma curve) to be a flat line you alter the steppings so that 0.0.0, 1.1.1, 2.2.2 etc. will show the same shade. effectively, you remove the steppings.
The L star is created to give a perceptual even stepping, so each gradient have an equal step. Its the one recommended to use when doing editing these days.
sRGB has a different curve, close to 2.2 (but not exactly the same).
The gamut value is a different story. Even though you can change the gamma to 2.6 producing strongly saturated colors, or down to 1.8 producing more washed out colors, it will not alter the gamut I'm afraid. You are just altering the tonal response.