Adobe Community: Dreaded black halo in AI CS3 PDF

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1. PrepressPro1,

Oct 22, 2009 7:52 AM in reply to yeongjoo

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When you say "Black Halo" are you talking about a darker area around the image where it meets the transparency? Or are you talking about lighter pixels on the fringe of where the image meets the transparency. Could you post a jpg of what you are seeing? If you change to Overprint preview this will also change the placed linked image to a high res preview. Does this make a difference?

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2. Jesseham,

Oct 22, 2009 8:01 AM in reply to PrepressPro1

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CS3 doesn't respect clipped tiffs. You need CS4 for that.

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3. yeongjoo,

Oct 22, 2009 8:13 AM in reply to PrepressPro1

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Overprint preview in AI or Acrobat?

Here is example of what I mean. This is a very mild case but I've had it where there's a whole line going down the side of the photo.

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4. PrepressPro1,

Oct 22, 2009 8:50 AM in reply to yeongjoo

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Overprint Preview may be a moot point now that I see your posted photo.

Are you saying these are not pixels in the Photoshop file? If so I haven't seen this before and am as anxious as you to know where they are coming from.

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5. yeongjoo,

Oct 22, 2009 9:22 AM in reply to PrepressPro1

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No, they're not in the Photoshop file... which is very frustrating/irritating.

I hope I get an answer to this problem!

Thanks though

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6. Jesseham,

Oct 22, 2009 10:02 AM in reply to yeongjoo

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Can you attach a .psd that exhibits this problem? It really looks like there is some scrap left in the psd from when the clipping was done...

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7. yeongjoo,

Oct 22, 2009 10:17 AM in reply to Jesseham

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The original file had a white background so I couldn't have just done a bad clip job. I'm typically very meticulous.

This new jpg better Illustrates my problem...

In the AI file it shows up fine and also when I export to a jpg so I'm not sure why making a PDF is such a problem.

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8. PrepressPro1,

Oct 22, 2009 10:26 AM in reply to yeongjoo

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OK is it essential you place a JPG in illustrator for this job. If you are just trying to get a clean PDF would you consider other file formats for the placed image which might resolve this? When I place an image especially with transparency involved I always use native Photoshop files to place in Illustrator. You may want to give this a try considering your level of frustration, I can only imagine you need to get 'er done.

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9. yeongjoo,

Oct 22, 2009 10:33 AM in reply to PrepressPro1

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Thanks for your advice everyone...

unfortunately these ARE Photoshop files that I'm placing into my ai file.

That's why they're coming out like this. I suppose I COULD save them as a jpg or something but I like the PDF because you can copy and paste text--whereas a jpg you can't. If these files were just for me that would be no problem but I am sending these files out to people that don't have Adobe anything (except Reader)... and they also need to stay workable.

A PDF is my best solution for those problems but if I have to have a couple more files, so be it.

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10. its_betty,

Oct 22, 2009 10:59 AM in reply to yeongjoo

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I've had the same problem. Changing the placed image to a Photoshop EPS with clipping path makes the black lines on the pdf go away.

Of course, there are cases where I need real PSD transparancy, so this solution only works most of the time.

I don't think the black lines print, but try telling that to a client who only looks at the pdf.

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11. yeongjoo,

Oct 22, 2009 11:39 AM in reply to its_betty

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Ah! Thanks Betty, I'm getting closer to a solution!

Maybe I'm doing something wrong but when I save it as an EPS it comes out looking extremely dithered.

What settings am I supposed to be using?

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12. PrepressPro1,

Oct 22, 2009 11:50 AM in reply to yeongjoo

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Yeah, this is the way EPS files preview. Looks awful. Now try the overprint preview to force the hi res preview.

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13. yeongjoo,

Oct 22, 2009 11:55 AM in reply to PrepressPro1

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I must be dumb.

Why is there still a white background?

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Dreaded black halo in AI CS3 PDF

Oct 22, 2009 7:00 AM

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