Colour Values change

[Tim_Malone@adobeforums.com]

Does anyone know why the colour values would change when rasterising an Acrobat PDF in Photoshop. A red colour is changing from 100y and 100m to 100y and 89m. Any feedback gratefully received.

[de_Siem@adobeforums.com]

because the pdf is raterized?

Question is why the need to open a pdf in photoshop in the first place?

[Tim_Malone@adobeforums.com]

The PDF had to be rasterized because the client producing the publication did not have PDF import for Quark, and it was the only way that they could place the 1/4 page advertisement into the document. I would have expected the colour to remain unchanged. Maybe the answer would have been to save as an eps from Acrobat and place it.

[Juanito_Leodegario@adobeforums.com]

PDF files can be placed in Quark 5.

Johnny

[Tim_Malone@adobeforums.com]

Thanks for the comments. Believe it or not there are still people using Quark 4, which cannot place PDFs

[Aandi_Inston@adobeforums.com]

But surely it can place EPS? And Acrobat can export EPS...?

Aandi Inston

[Tim_Malone@adobeforums.com]

I know you can place Acrobat eps, im asking on behalf of a 3rd party. It would still be nice to know why Photoshop changes colour values.

[Aandi_Inston@adobeforums.com]

It may be that the CMYK data in the PDF file has an ICC profile
attached.

Aandi Inston

[Tim_Malone@adobeforums.com]

Thanks Aandi, I think you may have hit the nail on the head. As soon as I get the original PDF I will check that out.

[Jon_Bessant@adobeforums.com]

A sidenote - Quark 4 can import PDF - but only with the PDF-Filter
(version 1.6 recommended) and downloaded from Quark.com ...

However, this can only import PDF which as PDF 1.3 ...

Also - do NOT trust Quark when importing PDFs .... yep .. try and go the
EPS route with PS1 and ASCII format

Jon

PS - Preflight will isolate 90% of all issues ...

[Tim_Malone@adobeforums.com]

Thanks to all for helpful comments