What is the difference between the functions of the Spot Color Options panel?

Question

Design

How is the option - Use Lab values ​​specified by book manufacturer different from the option - Use CMYK values ​​from the manufacture's process books?
Option - Use Lab values ​​specified by book manufacturer
Explanation - Use this to get the best possible match to the actual spot ink when spot colors are converted to process as part of a color-calibrated workflow.
Option - Use CMYK values ​​from the manufacture's process books
Explanation - Use this to get the manufacture's recommended conversion of spot inks to process. The results will only give a reasonable match to the actual inks if printing under the conditions recommended by the manufacturer.

Answer 1

different color spaces
Lab will provide the most accurate color reproduction, but not suitable for printing
CMYK adapts pantone to triad color separation for printing
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