Digital BW, The Print

For those interested, more amazing info from the always amazing Bruce
Lindbloom-
http://www.brucelindbloom.com/index.html?BetaRGB.html

Interesting that gamma and LAB do not progress uniformly. So if you
really wanted a custom gray space that closely resembled LAB, you'd
have to do it with one based on dot gain (multiple curve points)
rather than gamma.
Tyler