Has anyone tested the step wedge tool with Photoshop CC?
I have not used it for a (long) while.
That question caused me to be curious if my old Kodak Q-13 gray scale guide was sill any good. So, I measured it with the Spyder3Print. The graphs of the Lab L and Density are posted at http://www.paulroark.com/BW-Info/Kadak-Q-13-Gray-Scale-Lab-Density.jpg
It looks rather linear with respect to Density (not Lab), and the values are that same as they were when I first bought the guide (within my "spectro's" accuracy). There are a few bumps, that they showed up on both of the two separate reads I did to get the Lab L and Density.
Paul
PaulRoark.com -- Paul Roark's Photographic Home