And this mistake was not visible to my eye when viewing the converted images on screen! They looked a shade darker, but nothing like they printed at the litho.
To fix this, should I go back to the original RGB images and leave conversion to CMYK until the output to PDF? Will this avoid the 'Pure Black' trap?
Indeed, how does one convert images to CMYK safely? Just turn off 'Preserve Pure Black' for each conversion, and back on again for the text?
I also notice in the Soft Proofing dialogue a box called 'Preserve CMYK numbers'. Should that be checked?
Any help with this would be gratefully appreciated!
Seamus
Preserve pure black is not checked by default, if it's on turn it off. Map gray to CMYK black should be checked by default.
I would suggest setting rendering intent to perceptual instead of relative colorimetric. Make sure Photo-PAINTs color management matches Draw. I.E same profiles and rendering intent.
Let Draw embed the images, convert them via edit bitmap, taking them into Photo-PAINT to convert to CMYK, save the Draw file after importing each image, size the image and resample the resolution to what's required for output, then convert to CMYK in PP.
Use the default Press PDF settings in Draw you may want to convert fonts to curves in the PDF settings.
Thanks David,
Just that other setting 'Preserve CMYK numbers' in Draw's Proof dialogue - should that be on or off?
Also, when I convert an image to CMYK in PP, should I embed the ICC Profile? I see that the profile gets embedded again in the PDF export. I presume it doesn't get embedded twice?
Unless you're using transparency or complex fountain fills just leave soft proofing off. If you feel you need it then make sure you're soft proofing the CMYK profile. The preserve CMYK numbers in the proof dialog can be off since we will export through the publish to PDF dialog. BEST if you design all in CMYK for print, if you don't RGB vectors will have a color shift. Also best to convert images to CMYK in the live file rather than in the publish to PDF dialog.
Make sure your CMYK profile in Photo-PAINT matches the one in Draw. Once you import an image into Draw AND SAVE the draw file the DRAW FILE color spaces are attached to that image. If it's and RGB image it will be the RGB profile same for CMYK or Grayscale. Import the image and hit ctrl s on the keyboard, then when you edit bitmap the RGB from your Draw file profile travels with the image and when you convert to CMYK in Photo-PAINT that profile will travel back to Draw.
Import the images, resize to fit the space, in the bitmap menu resample for output (print usually 300 dpi), edit bitmap and in PP color correct, send back to Draw and ctrl s.
Once you're happy under the file menu, publish to PDF, use the Corel default print setting for 99% of the world. You may want to set the fonts to curves if you're unsure if they embedded.
Thanks again, David. That's a great help!
David Milisock said:Also best to convert images to CMYK in the live file rather than in the publish to PDF dialog.
Sorry, David, just a question based on the quote above...
Does that mean I set the PDF color output to 'Native' instead of CMYK, if the images are already CMYK?Or if I choose CMYK how will that pan out?
Yes use native.
When the color engine was redesigned in X5 and export features to support that were designed, the concept was to control the color by setting the application and document color management and use DEFAULT PDF settings. Which was set to native color, the reason for that is explained below.
Ergo, color is controlled by the file creator when you create the file! That means you create the files color based on destination, for color print press work use CMYK.
If your work is for digital print engine and or inkjet you can use expanded gamut techniques. What that means is that for those digital work flows you can build your file in RGB, CMYK, grayscale or pantone (Device N) color. The broader color capabilities of the digital devices would receive the NATIVE color in the PDF and do a better job of converting them.
Also native color PDF allows the use of pantone colors in your file it simply passes that information through to the output device.
If the device is a RIP for a press it generates a plate for the Pantone color if digital it passes along the information required for the colors simulation in digital. You can create a press job using CMYK, grayscale and any number of Pantone colors you want.
The concept allows a Draw user to work simultaneously in all color modes. Something Adobe still has issues with.
Thanks again, David. I've used Draw for years, but always found going to 'outside' print (litho or digital) a hit and miss job. My last effort was certainly a miss which I'm determined not to repeat!
Can you suggest a course or book that's up to date with Draw 2019/2020 that has all the information I need to fully understand what I'm doing with Draw?