Hello Jon. This transformation unfortunately occurs in the Adobe export process itself before doing any ripping action afterwards. I know that Spot Colors shall be describe in Lab (even if some former Adobe Pantone swatches are still in CMYK). But the problem arises in the process from the source file to final PDF export, so far. That's why I don't understand this behavior, so far. Sincerely. Axel On 09/06/2022 17:02, "Jon Meyer" <jonmeyer@grafixgear.com> wrote: [You don't often get email from jonmeyer@grafixgear.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] Hello Axel - The only correct way to describe spot color is in L*a*b* values. This is supported in Illustrator. I would not waste time with attempting to rig another workflow (unless your RIP is not L*a*b* compliant - in which case one must reduce expectations to just pleasing color). Jon > On Jun 9, 2022, at 10:03 AM, Axel Robert via colorsync-users <colorsync-users@lists.apple.com> wrote: > > Good afternoon. > > I was wondering if somebody else already experienced and solved this problem, as well. > > We built, dedicated to creative agencies, a specific color settings and pdf export couple for certain production files in which we manage ourselves the RGB to CMYK conversion. It’s almost a late binding workflow before sending the final PDF to our printers. > > So, all raster images remain in a specific RGB color space while Benday and vectors are still in CMYK. > > So far, we did have any issue, but we recently received a document with a Spot Color template in it. > And when we checked it, it appeared it had been tagged on the Alternate Color Space with an ICC profile (no more specific indication). > > We tried to find why without any success. > But we also experienced the same after many tests in In Design and Illustrator by creating a simple vector shape to which we added a Spot Color from the latest Pantone library. > > The PDF export has no color conversion except an OI and OC for the PDF itself. > And despite all the color swatches we use, the result is equal. > The only difference lies when we use a PDF Export Preset which converts colors to the destination. > In such a way, the Spot Color uses the CMYK mode as by default Alternate Color Space. > > How is it possible? > Would you have any idea? > > Thanks! > Axel > > UBISOFT | Axel ROBERT |Senior Manager, Prepress & Quality > Ubisoft encourages work/life balance and embraces flexibility. My workday may look different than your workday. > I have sent this message at a time that suits my work pattern, but it is not my expectation that you read, respond or > follow up on this email outside your working hours. > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > colorsync-users mailing list (colorsync-users@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.apple.com%2Fmailman%2Foptions%2Fcolorsync-users%2Fjonmeyer%2540grafixgear.com&data=05%7C01%7Caxel.robert%40ubisoft.com%7C3938909666e74509494008da4a28fe1f%7Ce01bd386fa514210a2a429e5ab6f7ab1%7C0%7C0%7C637903837314993528%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=F9h3W5lZIQlY8yKxZEr39%2FJ67JuXAa00pCSJZS2C9U0%3D&reserved=0 > > This email sent to jonmeyer@grafixgear.com