P: PDF import show edge artifacts on tiled PDF images (bug in PDF creation)

In fb page you (Adobe) ask me what is the problem with transparency flattener in Photoshop CS6. I give you some screens.

First I go to Illustrator (but we may use InDesign also) and create CMYK file with gradient background with object and I use effect with transparency (drop shadow):


Now I want to save this file to the pdf format. I want to use a standard PDF/X-1a:2001 and I choose in transparency flattener High quality option. I must use PDF/X-1a so don't give me advice "use PDF/X-4" please.

Now I open pdf in Acrobat Pro. Sometimes as you know Acrobat show thin line, but these line or lines which represent transparency flattening are safe in printing. In these case even Acrobat does not show any lines:


Now funny part. When I open pdf in PS CS6 (because I want to be sure that thin lines really don't exist) I watch something like this (red arrows are my markers):


I report bug in case #0183607842 (Thursday, September 6, 2012). I got the answer that the case describes a bug and in following update you will fix this bug. As you see nothing has changed.

All test files you can also download here:
http://speedy.sh/hKqFP/transp-flat.7z

UPDATE INFO
My friends managed to open the file on their computers and here are the results of the tests:

PS CS 6 on MAC (bug exist)


PS CS5 (everything is fine)

I understand that you are focusing on the Tiled images not rendering properly, but to me it's much more than that. If I have type in illustrator that has an outline of the same color as the fill and I: A. export it as a pdf and open it in Photoshop CS6 B. Copy from illustrator and paste as a smart object what I get is a tiny hairline between the fill and the copy. this is just one of the issues. Unless there is something that I am not understanding, how is this tiled?

Since Creative cloud came out I kept a copy of CS5 on my drive JUST TO DO SMART OBJECTS/RASTERIZE PDF's.

this has been a very long time for something that I deal with alot.

Hi Chris,

nice to see, that you are still motivated to look after this thread!
As far as I can reckon this, I'd say: not a single word more spent here will speed up or change things in any way.
Tell me (or ask your boss, or the big kahuna at Adobe Systems) one thing: what should I do with the jobs, lying around here (except exploring the 1001 workarounds for the problematic files)?
I'm totally frustrated! I feel helpless and forsaken by Adobe.
As I am an Adobe Cloud customer, I'm thinking about not prolonging the service until everything works as it should (including another problem I have with InDesign and the Windows memory management - means: I'm waiting desperately for the 64bit version).
If there was a competitor on the market - but there ain't.

I won't post anything else here till a solution comes up. I need the time for finding the workarounds mentioned above.

Kind Regards (at least to you Chris),

Markus

Yes, we know, and appreciate the irony. But the tiled images just cannot be rasterized without artifacts at a resolution less than the original image resolution. It's a case of one team not talking to the others. We are trying to get the responsible team to discuss the problem.

Yet the applications that are creating the PDF files are made by Adobe. This was not a problem before CS6 and as a customer we do not care where the fault lies, we just want it fixed!!! Chris if the Photoshop team can not help, is the issue being investigated by the InDesign and Illustrator teams?

Please read the rest of the posts in this topic. The applications that created the bad PDF have to fix the way they are writing the files. As written, they cannot be rasterized without artifacts.

Same problem here with lines after rasterizing in CS6. When will this be fixed Adobe ?

I agree 10 months and no fix from Adobe is a joke. Users do not care which departments problem it is, they just want it fixed so they can continue to work. Maybe if this issue was highlighted by a news website or magazine, then it may get Adobe moving quicker.

It's a shame that adobe has not fixed the problem yet. I don't care which team's fault it is or what you are trying to improve. We - the users - have to pay a lot of money for every software update and we expect it to work so that we can do our job! Let's be honest: most features in new versions are unnecessary while there are still a lot of things we're waiting for since CS2 - but we HAVE to update, because it's a standard. And this bug has not been fixed for 10 months!

So do YOUR JOB and make it work! NOW!

Please read the previous postings....
1) The PDF production isn't different - the rasterization improved in Photoshop and made the tiled image defect more visible.
2) Yes, the tiled images seem to has something to do with the transparency flattening when writing the PDF file.
3) no, older versions of Photoshop also showed the artifacts - just less visibly most of the time, and at different resolutions
4) that's a different issue that I'm working on (downsampling of images). Long story behind that, but I'm working on a fix for it.