From: Andrew Rodney
I use ColorThink or Babelcolor to evaluate the maximum black that a specific paper/printer combination can produce. But for those that don’t have those programs, is there a website where you can upload a profile and get a Lab-value of the black and white point of that profile?
Convert 0/0/0 in Photoshop to the output profile's black and read the lab value in Photoshop?
You want to start with a document in the printer's color space. Then use Andrew's suggestion of reading the Lab values of black and white. As to web sites for profile evaluation, I know I have seen more than one, but I don't have the links at hand. Note: Depending on the profile, a pure black may not be the darkest (minimum L*) value the printer color space contains, but it should be close. -Ethan