Hello Jutta,
Sorry for the delayed response and inconvenience caused. The options are available in Acrobat/Reader, and with your description, it seems that you are using to preview the PDF files in Photoshop, Am I correct?
The record does show that you are subscribed to Adobe PDFPack services, you can access the services thorugh the URL https://cloud.acrobat.com/combinepdf
Try opening the PDF on a browser like a Chrome or Firefox, or Safari and see if this brings any difference in the appearance.
If you are opening the PDF file in Adobe Reader or Acrobat, try the following suggestions:
- Edit>Preferences>Under Page Content information>select Show Large images
- Try changing the resolution once.
- Edit>Preferences>Change the Default Transparency Blending Color Space.
Check if these setting changes bring any differences.
If you are using Photoshop to preview the PDF files, you may have to contact the Photoshop Support team through Photoshop
If it's with Acrobat/Reader and specific to one PDF file, is it possible to share the PDF file with us?
To share the file, please use Adobe Send feature, upload the file, share the link to files via private message only, How Do I Send Private Message
Let us know how it goes and share your findings.
Regards,
Anand Sri.