Hi Andrew, Thanks. Yes it's frustrating. It does seem strange that the current software gets the same WP reading from the original i1Pro, it's only the newer instrument that reports a L* value that seems to be too low… John JWL Images Emeryville, CA On Jul 11, 2014, at 4:56 PM, Andrew Rodney <andrew@digitaldog.net> wrote:
On Jul 11, 2014, at 5:51 PM, John Lund <john@jwlimages.com> wrote:
For a given media - Epson's Watercolor Radiant White, e.g. - the media WP measured by the original i1Pro *consistently* shows as L*97, and this is across charts measured this year and old ones from as far back as 7 years ago (same WP value even in CMYK profile created for ColorBurst RIP). Measuring the same media last month with my i1Pro2, the media WP reported is L*94. I get similar discrepancies measuring charts on other papers
The bottom line is, X-rite changes things and the results therefore change. Case in point was some hardware change in the iSis between Rev C and E which produced a similar difference you report.
Andrew Rodney http://www.digitaldog.net/