Yes all settings are present and correct (16bit, Tiff, etc, etc)
Went backwards and printed same test image with supplied/starting curve and the problem was gone. So obviously something went wrong in my workflow. Out of interest I went back and did various different workflows to see which produced best result…
(256 step target, dried overnight, read with a i1Pro2)
Firstly used iProfiler to read target 3x times and output averaged measurement, This produced the worst result.
I then compared using iProfiler and ColorPort both reading the target just once (obviously using the respective correct targets). Both produced good results. The iProfiler had less Falses, but there is an extra step in the iProfiler workflow which means more chance of a mistake (and I did make a mistake first time pasting LAB numbers from Excel into Sublime).
I have watched the Channel Curve Smooth video, thanks Walker. Am I correct is thinking this tool is only intended to be used for ‘pre’ smoothing?