1. Re: Colorsync-users Digest, Vol 14, Issue 11 (Graeme Gill) Hello Graeme, what approach do you suggest? Do you think about Device Link profile? Whenever this method, should the result not be better with V4 ICC profiles instead of V2? Axel On 07/03/2017 21:00, "colorsync-users-bounces+axel.robert=ubisoft.com@lists.apple.com on behalf of colorsync-users-request@lists.apple.com" <colorsync-users-bounces+axel.robert=ubisoft.com@lists.apple.com on behalf of colorsync-users-request@lists.apple.com> wrote: Send Colorsync-users mailing list submissions to colorsync-users@lists.apple.com To subscribe or unsubscribe via the World Wide Web, visit https://lists.apple.com/mailman/listinfo/colorsync-users or, via email, send a message with subject or body 'help' to colorsync-users-request@lists.apple.com You can reach the person managing the list at colorsync-users-owner@lists.apple.com When replying, please edit your Subject line so it is more specific than "Re: Contents of Colorsync-users digest..." Today's Topics: 1. Re: Colorsync-users Digest, Vol 14, Issue 11 (Graeme Gill) 2. Re: Colorsync-users Digest, Vol 14, Issue 14 (Malcolm Mackenzie) 3. Re: FOGRA52 & i1Profiler [subject corrected] (Martin Orpen) ---------------------------------------------------------------------- Message: 1 Date: Tue, 07 Mar 2017 18:15:26 +1100 From: Graeme Gill <graeme2@argyllcms.com> To: "colorsync-users@lists.apple.com" <colorsync-users@lists.apple.com> Subject: Re: Colorsync-users Digest, Vol 14, Issue 11 Message-ID: <58BE5E0E.2060303@argyllcms.com> Content-Type: text/plain; charset=windows-1252 Axel Robert wrote: > I’m trying to answer according what I already read about the V4 ICC profiles. This is > related to the ICC White paper#2 March 2014: using the sRGB_ICC_v4_appearance.icc > profile and White Paper #26 Using the sRGB_v4_ICC_preference.icc profile. > > They both indicate a better use of rendering intents when comes the time to separate > from RGB to CMYK and a more precise definition of the PCS. There have been various attempts to show the potential of using the PRMG, but: 1) There's nothing to stop someone using the PRMG in a V2 profile. Indeed, some existing V2 profilers may have been doing something quite similar, and maybe the PRMG was an attempt to formalize this approach. 2) You can get even better gamut mapping results by creating a gamut mapping for a specific source profile -> destination profile combination, avoiding any intermediate Gamut. This doesn't require V4. Graeme Gill. ------------------------------ Message: 2 Date: Tue, 07 Mar 2017 10:45:58 +0000 From: Malcolm Mackenzie <mm@malcolmmackenzie.co.uk> To: colorsync-users@lists.apple.com Subject: Re: Colorsync-users Digest, Vol 14, Issue 14 Message-ID: <CAMKoG4ntkf=jUhctAfeajGcZamRZBd=LJVg=eKmD-qwFxua9hg@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Hi Martin I did a few tests in i1P and confirm your findings. The "Intelligent Black" feature does odd thing when it thinks TAC should be low and the Max K separation/width is contributing to the low yellow. I've had issues with the settings for digital as have others online. I remade the profile with the same data and it was fine, so it's an i1P thing. I've never got an answer or seen one from X-Rite on the issue. Malcolm +44 (0)20 3239 3330 +44 (0)7910 413421 mm@colour-engine.com skype; print_and_proof LinkedIn <http://uk.linkedin.com/pub/malcolm-mackenzie/7/326/778/> Twitter <https://twitter.com/ColourEngineLtd> www.colour-engine.com TeamViewer Quick Support <https://get.teamviewer.com/xjv8qcf> On 6 March 2017 at 20:00, <colorsync-users-request@lists.apple.com> wrote: > Send Colorsync-users mailing list submissions to > colorsync-users@lists.apple.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.apple.com/mailman/listinfo/colorsync-users > or, via email, send a message with subject or body 'help' to > colorsync-users-request@lists.apple.com > > You can reach the person managing the list at > colorsync-users-owner@lists.apple.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Colorsync-users digest..." > > > Today's Topics: > > 1. Re: FOGRA52 & i1Profiler (Martin Orpen) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 06 Mar 2017 13:44:12 +0000 > From: Martin Orpen <martin@idea-digital.com> > To: "'colorsync-users?lists.apple.com' List" > <colorsync-users@lists.apple.com> > Subject: Re: FOGRA52 & i1Profiler > Message-ID: <3C5CA2A6-7570-4A90-925E-6C78A7403549@idea-digital.com> > Content-Type: text/plain; charset="utf-8" > > > > On 1 Mar 2017, at 00:21, Martin Orpen <martin@idea-digital.com> wrote: > > > > I’ve made some MaxK and Full Black profiles using both the supplied > FOGRA52.mxf and by importing the raw ECI data and they produce a Y channel > that has next to nothing in it if you use the profiles in Photoshop. > > > I guess that FOGRA52 isn’t that popular then? > > The PSO Uncoated v3 (FOGRA52) profile documentation says: > > > The profile was created using the Heidelberg Color > Tool 17 with the following settings: > black length 9 (starting point 10%) > black width 10 > total dot area 300% > maximum black 96% > > > I can’t get yellow values anywhere near those generated by this profile > using i1Profiler or ArgyllCMS. > > And nothing even remotely close to the neutral curves of the Heidelberg > perceptual rendering. > > So I gave up and separated to a custom built FOGRA47L instead and then > proofed the job to FOGRA52. > > I find it odd that the dark patch on the ECI/BVDM Gray Control Strip for > FOGRA52 is C62 M55 Y60 — an ink combination that the ICC profile is > incapable of producing... > > -- > Martin Orpen > Idea Digital Imaging Ltd >