Photoshop: Export Images to PDF at 72DPI

Exporting PSDs to PDF via PDF Presentation in Photoshop CS3 results in blurry images because all the presets created PDFs with a higher resolution, and images get upsampled to preserve their dimensions. I created a PDF preset that creates images at 72 DPI:

Download: 72dpi.joboptions

Copy this to C:\Users\<username>\AppData\Roaming\Adobe\Adobe PDF\Settings and it should become available as a preset in PDF Presentation.