PDF Color Proofs

If self preflighting is not an option, a PDF proof is the answer. PDF Proofs will show any transparency issues or font issues that may arise from improperly built PDF's. They will also show any color shifts that may arise if any components of the file contains any RGB colors or Pantone Spot colors. There are known issues with the PDF format when the file contains Pantone colors and transparencies while converting to CMYK. Better to be safe than sorry!