Re: [Lcms-user] Known data round-tripping for testing

2009-04-09 Thread info
I have seen dE below 0.1 average, but that is very hard to get because you (as Hal says) have: - Measurement instrument variability - Plot-to-plot variability, even if you print patches, then profile and then measure. Good printers minimize that. - Printer-to-printer variability. Different pri

Re: [Lcms-user] Known data round-tripping for testing

2009-04-08 Thread Hal V. Engel
On Wednesday 08 April 2009 10:59:36 am Campbell, Jason J wrote: > One other question... If I give a CMYK input to obtain Lab output, and I > use a known CMYK set from the data used to create the profile, should the > returned value match the actual/measured Lab value? I am getting close > results

[Lcms-user] Known data round-tripping for testing

2009-04-08 Thread Campbell, Jason J
One other question... If I give a CMYK input to obtain Lab output, and I use a known CMYK set from the data used to create the profile, should the returned value match the actual/measured Lab value? I am getting close results, but they are far enough apart for me to question this... Example: In