Quite likely they are exactly what the Blurb requirements are since the module was specifically designed to only function for one vendor.
There are no preferences in PDF export. Whatever you've put on your pages
will just be saved to the pdf.
@ Butch_M: You're probably right - but do you know what those requirements are? In terms of colour space, jpg compression, ppi etc? I can't seem to find any guidance on the Blurb site so was wondering if anyone over here might have known.
@Dorin: The controls for PDF export can be found as follows: within the book module, at the very top of the right panel, you can choose whether to create a book for blurb or PDF. If you change this to PDF, you will see another set of options for things like jpg qulaity, ppi, colour space etc.
My intention is to set up those PDF options to exactly match what Lightroom would upload to Blurb, for proofing purposes and for some troubleshooting that I'm doing.
If you want to exactly match what LR would upload to Blurb, choose Blurb in the Book Settings panel and then generate the PDF through the Export Book to PDF button in the left hand panel.
I thought of that already John, but sadly it doesn't work that way. Unfortunately, even with Blurb selected in the book settings, the Export to Book in the left hand panel is still affected by changes made to the pdf options. It doesn't revert back to whatever the original settings were.
I did the following:
1. With Blurb selected I exported a PDF using the button on the left hand panel.
2. I changed from Blurb to PDF and dropped the jpg quality and ppi to low values (without noting the original values-oops!). I exported another PDF and as expected, the file size and image quality where noticeably smaller / worse.
3. I then changed back to the Blurb option in the book settings panel and I exported a third PDF using the button on the left hand panel. I expected this to match the first PDF in terms of file size and quality, but in fact this PDF was still small and crappy.
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Sorry, it looks like you have hit a bug which I forgot I have reported to Adobe. I'm pretty sure the Blurb settings are 100% quality, 300 dpi, sRGB, Standard sharpening, Glossy.
Thanks John. I had presumed that quality / ppi / colour space options were as such, but wasn't sure if the paper selection had any impact on the sharpening settings.
Is there any merit in me also reporting the bug to adobe, and if so how do I go about that?
Probably not - I'm told it has been fixed.
Ok, I guess I will just have to wait for 4.1!