Changes to Same as Source Printing in Acrobat 9
Hello Everyone,
I'm in the process of testing CS4 for deployment to a large print production environment and I'm seeing some interesting behavior in so far as it's handling of color management is concerned, specifically with Same as Source printing from Acrobat.
I currently have CS2 deployed, and we're using InDesign for page composition. We primarily accept Adobe RGB (1998) and US Web Coated (SWOP) artwork. PDFs are created from InDesign via File > Export, and we have it configured for "No Color Conversion" and "Include all Profiles." As such, our PDFs contain both RGB and CMYK artwork, all of which is tagged with an ICC profile.
In Acrobat 7, we submit these files "Same as Source" to our RIPs (Fiery and Wasatch) in order to preserve the embedded profiles. All of our color management is handled at the RIP. This works quite nicely. We have tested the submissions and the RGB and CMYK builds (color numbers) come through dead on.
With Acrobat 9 Same as Source submissions, we are seeing that the builds are changing, and that we are getting a conversion to CMYK.
-Original PDF file
Raster RGB - 191,45,47
Here are the numbers that are submitted by Acrobat, captured by our RIP:
-Acrobat 7 Same As Source
Raster RGB - 191,45,47
-Acrobat 7 Printer/Postscript Color Management
Raster CMYK- 0,244,245,0
-Acrobat 9 Same As Source
Raster CMYK - 0,242,251,0
-Acrobat 9 Printer/Postscript Color Management
Raster CMYK - 0,242,251,0
-Acrobat 9 Acrobat Color Management
Raster CMYK - 17,248,245,1
So the question is: What changes have been made in Acrobat 9 to cause for it to handle Same as Source print submissions differently? Why is it that our builds are changing when Same as Source has always been how we get "pass through" color from Acrobat?
Has anyone else run into this? From the perspective of a RIP-driven, color managed workflow, this is a serious issue, no?
(This is also posted to the Color Management forum, as it is both a color management concern generally, and an issue specificly related to Acrobat.)
Matt
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