PDF Export vs Distiller Resolution Issue

[Carlton_Chin@adobeforums.com]

Thanks for responding.

Jon: Your comment about exporting from InDesign to generate a PDF. It sounds like the overall image quality is "downgraded" some what by going from InDesign > Postscript > PDF as compared to just exporting to PDF from InDesign no? Is it like how a Photoshop image degrades re-save the original JPEG a few times?

Gene: The image quality does look better when sending data as "All." So why is the "Optimize Subsampling" option the default and available? Is it not appropriate for commercial printing? Unknowingly, I think I have been send PDFs with that default but none of the printers have said anything. The printed pieces generally look good.

[Jon Bessant]

In fact typically, the image resolution and quality of the least
affected since they are static objects as such.

The type of quality which can be lost can be layers (OCG), ICC profiles,
trnsparency, hyperlinks, bookmarks, document structure as an example.
Although not all print related - it's interesting to know's going on
through the conversion.

Jon

[Carlton_Chin@adobeforums.com]

Jon,

I am not sure what you meant by static objects. Please elaborate.

As for the quality being lost. Were attributing the lost to exporting to PDF from InDesign or generating a PDF via Distiller?

Thanks.

[Jon Bessant]

[email]Carlton_Chin@adobeforums.com[/email] wrote:

> Jon,
>
> I am not sure what you meant by static objects. Please elaborate.

images with a specific resolution and indeed, colour space such as
DeviveCMYK (as an example)

>
> As for the quality being lost. Were attributing the lost to exporting to PDF from InDesign or generating a PDF via Distiller?

Not really, more metadata objects as such - the upper most layer in a
PDF, layers, annotations, links etc., etc

Jon