Reply To: Do Image Frames Use Antialiasing? Slight Halo…

My standard reply, just to rule some things out:

Spot colors and Transparencies (or any raster effect) don’t play well together.

Go to your PDF Export Settings and try these:

1. General: Standard PDF/x 1a:2001, Acrobat 4

2. Compression: Do not Downsample (all 3)*,
check Compress Text and Line Art, check Crop Image Data to Frames

3. Marks and Bleeds: Uncheck all Marks, Bleed: .125 on all sides

4. Output: Convert to Destination: US Web Coated (SWOP) v2,
Ink Manager: check All Spots to Process (if needed)

5. Advanced: Transparency Flattener: High Resolution

You can also try cleaning up your PDF by Exporting to PostScript and loading it in Distiller.