Overprint Preview in Acrobat not Working

[leonardr]

We may have a similar situation here. AcrobatX is previewing the PDF using the embedded profile and not showing the actual color.

If you assign an object an explicit source profile, then YES (of course!) we use that profile! This is true for ANY PDF, because that's what the standard says.

If you create a PDF/X (or PDF/A or PDF/E) compliant file and assign an OutputIntent Profile, then YES (of course) we use that profile as the implicit source profile for all device colored objects in that space, because that's what the standard says.

There is a check box to view as actual colors but this is causing a lot of issues.

What checkbox are you talking about in what application? And why would it be causing problems?

[leonardr]

Press Quality
Compatibility Acrobat 4 (pdf 1.3)
Compression uncheck compress text and and line art.
Under advance select flatten transparency to High quality.
I have InDesign set up to use US sheet-feed coated color profile
So that is what I export it to. This has seemed to fix any issues I every had.

RIght - that's OLD SCHOOL PDF export and is basically equivalent to PDF/X-1a BUT without all the benefits of compliance to a known standard.

The modern option would be to simply use the PDF/X-4 setting.

[everton69]

Leonard R - can I pick your brians on the set up of Acrobat Reader?
Whats the corret setting for Overprint Preview.
I have advised people to have it set on ALWAYS - this seems to mimick what our RIP does to the PDF.

Neil

[leonardr]

Leonard R - can I pick your brians on the set up of Acrobat Reader?
Whats the corret setting for Overprint Preview.
I have advised people to have it set on ALWAYS - this seems to mimick what our RIP does to the PDF.

The problem with always is that it will take longer to render (and distort) the rendering of PDFs that do NOT have overprint - such as those that come from MSOffice documents.

That's why the default of "Complies with PDF/X", since you know that PDF/X documents are destined for printing and OP is only relevant there.

Hopefully you are using PDF/X for all your files going to RIP.

[everton69]

Hello Leonard - Thanks for your reply.
We are using PDFx1a as the standard and in most cases we have no issues with viewing or ripping. The problem native file was a logo from illusustrator that had been changed from black to white and set up as overprint - we feel it kept the attributes from when the logo was black.
We made a PDFx1a and proofed that via Truflow and Epson, the logo was missing but the client missed that.
We also PDF'd a low res vesrion
If you viewed the PDF using the O/print Preview set to PDFx or None the logo appears - but its missing using Always or Auto.
We've always felt that the Always option was best as that mimics the RIP.