te,
First, SaveAs isn't the best way to create a PDF from FM. Printing to the logical Acrobat printer is preferred.
So, in FM, do Print Book.
On the Print dialog box, in the Printer field at the bottom, select Adobe PDF (the exact name will vary from system to system, depending on how the system is set up and what version of Acrobat is loaded).
Once Adobe PDF is selected, click Setup > Properties. (Many people either set Adobe PDF as the system default printer or use a plug in to set it for Frame.)
On the Document Properties screen, under default Settings, either select High Quality Print or Press Quality (these are pre-configured collections of options that, together, are a Job Option.) OR, Edit whatever Job Option is currently active and shut off graphics downsamplling.
Click OK and OK to get back to the Print Book box.
Activate the Generate Acrobat Data checkbox. De-activate Print To File.
Click Print and see what you get.
Art