I am trying to understand some apparently minor points about CIELAB.
What do the asterisks in CIELab* stand for? Do they represent a math function? (Not my best subject, although with explanations I can do.)
On the X-rite CIELAB color chart what is the significance of the 60, 60, -60, -60 clockwise around the circumference of the chart? I realize the grid in the chart is in increments of 2 from 0 out to 60 or -60 but what do the numbers signify? If it is just the chroma, how does the range 0 to 60 relate?
What value is considered the 0 point in the hue? It seems to be a red. Or does this even matter?
What is the best visual 3D diagram of the CIELAB sphere and where can I find it?
If I am allowed I would gladly post an image of the CIELAB chart I am talking about.
Thank-you for your indulgence and time.