Photoshop’s Convert to Profile folds the destination profile and conversion options into a single dialog. If the document has an assigned profile, the Color Settings’ CMYK Working space is not used, but the Color Settings’ Conversion Options (Intent, Engine, and BPC) do have an affect on the conversion numbers. In Illustrator the Document Color Mode would have to be CMYK, and the Swatch conversion would be to the document’s assigned profile (Edit>Assign Profile.). In the guide there are a fair number of colors listed as out-of-gamut, but are close to the edge.Ĭonverting in Illustrator by ensuring that 'Use Lab Values.' is checked in the spot color options first, and then changing the color space to CMYK in the Color pallete on a box filled with a PMS color, 'should' get us the same results as creating a Photoshop file in LAB color space, then doing a 'Convert to Profile', correct? For my scripted branding guide I got the gamut info by making the round trip conversion with AppleScript. If there is a significant difference between the starting Pantone Lab values and the converted Lab values, the color is out-of-gamut. The other way to check gamut is by making the round trip from the measured Pantone Lab value, to the destination CMYK profile, and back to Lab. Here with my Color Settings set to US Web Coated SWOP Pantone 3559C shows as in gamut:īut if I change the profile to US Web Uncoated SWOP it is out-of-gamut: So, a color on the gamut edge might show as in-gamut to a coated profile, but out-of-gamut to an uncoated profile. If you close all documents the current Color Settings’ CMYK space is used for the gamut. Using Photoshop’s Color Picker>Color Libraries is the easiest way to check whether a solid ink is in gamut. It includes a Pantone chart specifically for GRACol Coated, GRACol Uncoated, sRGB, and sRGB HEX with gamut info for the coated conversion: This Indesign thread I posted might help. To be useful, Pantone conversion charts would have to be specify the destination, so most online conversion applications and charts (like the Adobe Color web app ), are not reliable.
When the color is a tint, there are also problems with using Ink Manager to make the conversion, so it is better to change the swatch to process Lab, and then to destination CMYK, rather than use Ink Manager. However they don’t publish what the expected press conditions are and there are some glaring inconsistencies within the library. Pantone offers the device dependent PANTONE + Bridge libraries, which are process CMYK (and would change in appearance depending on the document’s assigned CMYK profile). If your printer tells you that the destination profile should be SWOP, but their press isn’t really running to the SWOP standard, then a SWOP conversion would be somewhat off. The Pantone Lab values are instrument based readings from printed solid ink swatches, so the accuracy of the CMYK simulation relative to the printed solid ink is dependent on how closely the press is running to the destination CMYK profile used for the conversion.
#Pms color converter pro#
In Illustrator CC, with Overprint Preview turned on, and proof colors set to our output device, how far should I trust my screen preview? I have an NEC MultiSync PA 242 (wide gamut) monitor that is calibrated with a i1 Display Pro to D50 specs, so it should be a pretty good display. All methods give pretty big differences in final results. I quickly tried a test in Illustrator of swithing spots to CMYK, checking Pantone Bridge values, and setting up a PS doc in LAB with spots, then doing a 'convert to profile'. Is there any way in Illustrator (or PS I suppose), to easily see which spot colors would be out-of-gamut for CMYK (or MOST out-of-gamut)? This might help us determine which spots to convert. But the client wants to narrow this down to process + 2 PMS only, so we have to convert 1 or 2 spot colors to CMYK and hope for the best. The files are being created in Illustrator CC 2020, with all art currently setup as process + 3-4 PMS spot colors.
So just wondering if there is a preferred method for determing CMYK values for PMS spot colors if either A) you have a specific profile from the printer who will be running job or B) you don't, so you assume GRACoL or SWOP based on experience?
And I know there have been a lot of advances in Pantone sytems, color management, and all of the CC apps. I was searching for insight on best methods for converting PMS spot colors to CMYK and the most thorough discussion I found was here, and ironically it was started be ME (see.
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