Bob Coss wrote: > Were you able to look at the image I sent you of the TID from a ColorElite > 4x6 target? I suspect that by fitting fewer patches on the sheet, they make it somewhat easier to read. There doesn't seen to be anything noticeably different about the TID, except that the user definable field is filled with a (presumably) fixed pattern. The Argyll chart uses that to record the random start value. Graeme Gill.