Author Topic: Overprint Mode - Acrobat DC/Pitstop 12  (Read 1576 times)

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Offline AaronH

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Overprint Mode - Acrobat DC/Pitstop 12
« on: August 03, 2017, 01:06:51 PM »
Hey everyone,

Is there a way to convert all of my overprint modes that are set to the illustrator overprint to standard? I have a host of PDF magazines I have to open, saves as an optimized file, convert images to RGB (using acrobat's color conversion), save, then convert images to CMYK (again using acrobat's color conversion). This is to remove most of the close to 400% ink values. Once I'm done, the PDFs still have some drop shadowy elements that are causing ink limits well over 300%. Is this possible to convert them all to standard vs illustrator overprints? I know you can right click and tell it to go to OP0, or click and change it in the Inspector window.

Thanks!
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Offline mattbeals

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #1 on: August 03, 2017, 01:12:17 PM »
Use a device link profile with ink reduction and GCR. Why would you want to change overprints, wasn't the art designed with the overprints in place?
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Offline Ear

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #2 on: August 03, 2017, 01:18:21 PM »
I am seeing a lot of overprint all of a sudden too. You can change prefs and uncheck "overprint black".

No, it is not okay, prepping for offset presses and was not designed that way. I am seeing 100% black fills with parts of picture showing through and text that doesn't want to KO/trap because of these settings. And I know the designer intends the black to KO or crop a picture, and not show through. Good thing I have PitStop.
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Offline AaronH

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #3 on: August 03, 2017, 01:21:15 PM »
Quote from: mattbeals link=msg=293125 date=1501780337

Use a device link profile with ink reduction and GCR. Why would you want to change overprints, wasn't the art designed with the overprints in place?


From what I'm seeing in their PDFs the Illustrator Overprints are causing the ink limit to be over 300%. I don't visually see a difference with the two overprint modes on their files.

I'm not sure I have a GCR device link profile. At least we don't in XMF, otherwise I would do so. Is there a default GCR in acrobat/pitstop 12?

Thanks!
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Offline mattbeals

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #4 on: August 03, 2017, 01:24:09 PM »
Quote from: Ear date=1501780701 link=msg=293128

I am seeing a lot of overprint all of a sudden too. You can change prefs and uncheck "overprint black".

No, it is not okay, prepping for offset presses and was not designed that way. I am seeing 100% black fills with parts of picture showing through and text that doesn't want to KO/trap because of these settings. And I know the designer intends the black to KO or crop a picture, and not show through. Good thing I have PitStop.


Changing black overprints as you specify is different than the question asked. Your circumstance I understand why you would want to and need to remove specific overprint parameters.
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Offline mattbeals

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #5 on: August 03, 2017, 01:25:28 PM »
Quote from: AaronH link=msg=293130 date=1501780875

Quote from: mattbeals link=msg=293125 date=1501780337

Use a device link profile with ink reduction and GCR. Why would you want to change overprints, wasn't the art designed with the overprints in place?


From what I'm seeing in their PDFs the Illustrator Overprints are causing the ink limit to be over 300%. I don't visually see a difference with the two overprint modes on their files.

I'm not sure I have a GCR device link profile. At least we don't in XMF, otherwise I would do so. Is there a default GCR in acrobat/pitstop 12?

Thanks!


Not in PitStop 12, but yes in PitStop 17 where Enfocus has included device links with ink reduction. Not sure how much GCR is in them, but they appear to be very high quality links that you would find useful.
Matt Beals

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Offline AaronH

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #6 on: August 03, 2017, 01:30:34 PM »
Quote from: mattbeals date=1501781128 link=msg=293132

Not in PitStop 12, but yes in PitStop 17 where Enfocus has included device links with ink reduction. Not sure how much GCR is in them, but they appear to be very high quality links that you would find useful.


Alright. Well shoot, I found a way to make an actionlist that changes the mode to standard but it has a different effect on the black text than what I wanted.  :undecided:
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Offline Ear

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #7 on: August 03, 2017, 01:48:34 PM »
For black text builds, you can go to Global Change. Change Specific Color. Grab fill. Change to whatever you want. Run per page or complete document. I use it all the time and it is very fast and effective. The tabloids send in shit with dozens of RGB builds in the text and odd intents. Global change is often faster and more dynamic than setting up an action.
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Offline mattbeals

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #8 on: August 03, 2017, 02:01:12 PM »
Quote from: Ear link=msg=293139 date=1501782514

For black text builds, you can go to Global Change. Change Specific Color. Grab fill. Change to whatever you want. Run per page or complete document. I use it all the time and it is very fast and effective. The tabloids send in shit with dozens of RGB builds in the text and odd intents. Global change is often faster and more dynamic than setting up an action.


Yes, global change is often easier and faster for one offs. If you consistently run into these problems though an action list as part of a preflight profile in the end becomes easier and faster and more flexible.
Matt Beals

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Offline Ear

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #9 on: August 03, 2017, 03:33:27 PM »
Agreed. Use actions when possible, for repeat offenders. Actions are very productive.

For projects with unusual, unpredictable or multiple color builds to convert, Global change is good for on-the-fly stuff, or as you stated, one-off kind of work. I see a lot of periodicals where there has been text brought in from other word processors, and they drag RGB black definitions into InDesign. Global change rocks these. But I have Action sets I run on the same files, for other conditions, including color.
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Offline mattbeals

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #10 on: August 03, 2017, 03:56:40 PM »
My rule of thumb for color mappings, if you have to do it more than once then it belongs in a remap color action. Why do the work twice?
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Offline Ear

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #11 on: August 03, 2017, 04:16:28 PM »
That's my philosophy for all computing. It's the point of computers, to handle repetitive tasks. Prepress, mail dept, billing... I hear the office chicks doing redundant data entry. Drives me crazy.
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Offline swampymarsh

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #12 on: August 05, 2017, 06:23:24 PM »
It is sweet that a global change can be saved as an action list (there is often a lot more going on than one realises)!

Offline swampymarsh

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #13 on: August 05, 2017, 06:25:34 PM »
Be wary of convert colours in various versions of Acrobat, I have seen it adversely affect image content when it should not (PitStop is safe though from memory…):

https://forums.adobe.com/thread/1113286

https://forums.adobe.com/thread/2343197
« Last Edit: August 06, 2017, 09:59:40 PM by swampymarsh »

Offline AaronH

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Re: Overprint Mode - Acrobat DC/Pitstop 12
« Reply #14 on: August 07, 2017, 01:35:36 PM »
Thank you swampymarsh that's something I'll have to keep an eye out for.
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