Photoshop Elements 2018 Panorama Photomerge creates oversize files.

[#1]

Over the years I have scanned pages from historical newspapers using a wand scanner then photomerging the scans to a single pages which I saved to a PDF. On earlier versions of Photoshop Elements, this created reasonable size files, around 4-5,000 KB.

Ever since switching to Elements 2018 and using the Guided panorama stitching, I'm getting  enormous PDF files, routinely over 100,000 KB. I can reduce them in Adobe Acrobat Pro, but that only reduces the file size down to around 60,000 KB, still enormous.

What am I doing wrong?

Don

[#2]

Over the years I have scanned pages from historical newspapers using a wand scanner then photomerging the scans to a single pages which I saved to a PDF. On earlier versions of Photoshop Elements, this created reasonable size files, around 4-5,000 KB.

Ever since switching to Elements 2018 and using the Guided panorama stitching, I'm getting  enormous PDF files, routinely over 100,000 KB. I can reduce them in Adobe Acrobat Pro, but that only reduces the file size down to around 60,000 KB, still enormous.

What am I doing wrong?

Don

[#3]

Before discussing the question of PDF file sizes, it would be good to know:

- The size of the final panoram in pixels

- The size of the final panorama in .psd or .tiff format in KB before and after flattening the layers.
- The size in KB of that flattened file when saved to Photoshop pdf format from Elements.

The explanation can be that the only available format from Elements, Photoshop Pdf, is a combination of a standard pdf with a full layered psd. Huge in size, but can be opened either from Elements or Acrobat/Illustrator.

If you want to save to the standard pdf format from Elements, you can install a pdf virtual printer driver (like Print to Pdf in Windows 10) and 'print' the file instead of 'saving' it. You'll get a reasonable pdf size.