Axalta material settings question

[oberfett]

Can anyone explain how to tweak axalta color materials ? What do all those deltas mean etc

[Rex]

That is an excellent question.

I believe "Near Spec" adjusts the specular color, "Face" adjusts the color when viewed from straight on, and "Flop" adjusts the color when viewed at an angle; although, I could be wrong. Any automotive paint experts out there that can help? For now, the best advice I can give is use trial and error to find your desired color. Or, just go here to find thousands of additional paints: http://keyshot.dupont.com/keyshots/home.html#cat/2

[oberfett]

The collection at the link looks awesome thank you ! I was just curious about the numerical side of things, I assume it is similar to HEX color codes.

[Rex]

The collection at the link looks awesome thank you ! I was just curious about the numerical side of things, I assume it is similar to HEX color codes.

L*ab color space is designed to approximate human vision.

L = Lightness where the higher this value the lighter the color
a < 0 = green
a > 0 = magenta
b < 0 = blue
b > 0 = yellow

But keep in mind these are just tweaks to the original L*ab color of the material.

Some more info on L*ab: http://en.wikipedia.org/wiki/Lab_color_space

[ddolezal]

Question, Rex:


If the color is specified in Lab Color space, why are the value sets Called DELTA L*??


Delta L normally is the Luminance difference of two L values, calculated by different Delta Formulars.


http://en.wikipedia.org/wiki/Color_difference




Dieter

[Rex]

Question, Rex:


If the color is specified in Lab Color space, why are the value sets Called DELTA L*??


Delta L normally is the Luminance difference of two L values, calculated by different Delta Formulars.


http://en.wikipedia.org/wiki/Color_difference




Dieter

I believe Delta L*, Delta a*, and Delta b* do refer to the difference of two values - the original proprietary Axalta Lab color, and the new value created by the difference added.