Re: The Lab values are not in order. Cannot make a profile.
2014-11-28 by roger@...
According to your data you have three "flat spots" (or maybe even reversals) in you step wedge. These occur between steps 5 & 6, 11 & 12 and 15 & 16. In each case the consecutive L* values are too close to be differentiated. There's either something wrong with your printed wedge or something wrong with your measurements.