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No worries.

Its difficult to explain without making it extremely confusing but there really isn't any need....we just have to take it on board that PS is not very accurate when it comes to...well, images.

If you're lonely and desperate and want to read about 'Quasi 15bit' and why PS exclusively uses 'Lab' for just about everything, this article explains it in just about the easiest way I've found...

http://www.rags-int-inc.com/PhotoTechStuff/ColorCalculator/AdobeMath.html

It explains a lot once you understand it.

Just to back up my argument about gradients...try a 256px wide document filled with a 0-255 linear, (smoothness @ zero), gradient.....each column pixel should be one more RGB value higher than the last...up to 255...right?

Bet ya its not....bet ya the highest is 254!

:banghead:

Regards.

MrToM.