Martin, I am not 100% sure that my observations were actually made on "optically brightened" press sheets. It's very possible that these observations were made on "mildly" or "not much at all" optically-brightened paper. I have to dig my data... I wish I was still seating next to the press room, then I could simply get up and go pick a few sheets off the press on any job ran on a "good" optically-brightened paper. But I will get to good samples of OB paper and gladly share my findings then. Believe me, there is nothing I want more than get to the bottom of this M1 business. If only for my own mental sanity 😊 / Roger -----Original Message----- From: Martin Orpen <martin@idea-digital.com> Sent: Monday, June 10, 2019 11:20 AM To: graxx@videotron.ca Cc: 'colorsync-users?lists.apple.com' List <colorsync-users@lists.apple.com> Subject: Re: Fogra 51 and 52

On 10 Jun 2019, at 15:55, graxx@videotron.ca wrote:

On recent press calibrations, I noticed that Black ink is often quite warm, like b* = +4.00 to +5 and +6. But it has not been my personal experience that Black ink is "on the blue side"? I'll have to revisit some of my observations to double-check.

Roger That’s what we’d expect. Why our proofing systems are now generating — and happy to pass — 40% black tints with results like b -3.6 (on a substrate where b = -2) I have no idea? Never used to see this in the days before 51 & 52 turned the whole world blue. -- Martin Orpen Idea Digital Imaging Ltd