Using a MacBook Pro running Mac OS version 10.7.5 with NVIDIA GeForce GT 650M 1024 MB graphics card. High-resolution source images look fine in other software, and embedded images in a PDF look fine when viewed on Google Drive, but curves and diagonal lines look jagged when viewed in Acrobat Pro 10.1.6. Checking smoothing options in Preferences only adjusts the position of the jagged edges; it neither enhances nor ameliorates them.
I created a sample PDF to illustrate the problem I'm having. Created in illustrator, exported to PNG and converted to PDF. Here is a screenshot of the source PNG side-by-side with the PDF I created from it:
Please note that when I preview the PDF in Finder, and when I view the PDF in Chrome using Google Drive, the image looks fine. Here's a link to the sample PDF:
http://www.sendspace.com/file/77f5m6
Any assistance is appreciated. Thanks!