fde101 Posted February 26, 2019 Share Posted February 26, 2019 10 minutes ago, MikeW said: QXP has no color space at all, not even a blend color space. https://support.quark.com/en/support/solutions/articles/19000056105-how-to-work-with-quarkxpress-color-manager https://support.quark.com/en/support/solutions/articles/19000080487-cmyk-blending-mode According to the article at that first link, QXP is using a L*a*b* color space internally as of version 7. You would still need to provide an RGB and/or CMYK space to transform to and from L*a*b*; the transformations for display and/or print would be defined by the device (or at export time) but to provide the values for the color picker you would need some kind of source transformation space, which is evidently configured at the application level rather than the document level. The L*a*b* color space is about the closest thing we have to a "universal" color space that encompasses all of the others, so that makes sense to provide the greatest potential for consistently reproducing colors as long as they are within the capabilities of the device. 10 minutes ago, MikeW said: color is shown as is There is no "as is" when it comes to numeric color values. The only way that can work is if the colors are interpreted as being in device color space which will change from one device to the next, leading to inconsistent results. Link to comment Share on other sites More sharing options...
MikeW Posted February 26, 2019 Share Posted February 26, 2019 Yes. That first sentence was a casualty of editing on my phone. I really shouldn't use my phone for posts sometimes. I really meant to limit the comment to a blend color space, which Q does not have. LAB is about as is for viewing color as is currently possible. It's accurate in rendering to a screen. As accurate as one can get with a profiled monitor anyway. Link to comment Share on other sites More sharing options...
fde101 Posted February 26, 2019 Share Posted February 26, 2019 48 minutes ago, MikeW said: a blend color space, which Q does not have. It sort of does, but it is evidently a choice of either a fixed RGB or a fixed CMYK color space, or a grayscale space, that is tied to the proofing options (and prior to QXP 2018 was always RGB): https://support.quark.com/en/support/solutions/articles/19000080487-cmyk-blending-mode Link to comment Share on other sites More sharing options...
MikeW Posted February 26, 2019 Share Posted February 26, 2019 1 hour ago, fde101 said: It sort of does, but it is evidently a choice of either a fixed RGB or a fixed CMYK color space, or a grayscale space, that is tied to the proofing options (and prior to QXP 2018 was always RGB): https://support.quark.com/en/support/solutions/articles/19000080487-cmyk-blending-mode Yep, sort of. It's a viewing-only choice. The None option, which is an as-installed default, renders color to the screen as RGB. The other options change that to the chosen transparency blend space (if there is no transparency there really isn't much difference with the exception of out of gamut objects or objects not in the chosen color spacer for the output simulation). Further, vector objects that are imported (vector drawings or PDFs) are not color managed by a default installation. Both of those options are different behavior than ID. I would argue I like Q better in both regards. In both applications, actual final rendering and/or color conversion is deferred until output. And that output can, if so desired, be a mix of all color models either application supports. This is different than APub currently operates. Link to comment Share on other sites More sharing options...
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