Posting some photos to the blur-from-the-north queue again. Decided to peek into the image metadata before I wipe it for publication. (I don't know if Tumblr does it automatically.)
Ah, we live in a civilized age. The metadata doesn't loudly say that the photo was made with Affinity Photo. There's a relatively inconspicuous entry in XMP metadata that says the file was produced by AP2. It's all very elegant.
ACDSee doesn't even bother to announce its presence. It's an asset manager, you see. Asset managers need to mess with the metadata frequently. If it announced every single modification to the metadata, that would render the whole history feature useless. (It only bothers to announce its presence when I use the image editing features.)
What does the legacy EXIF metadata say?
"THIS FILE WAS SOFTWARED BY ELEMENTS ORGANIZER 14.0. VERILY, CREATOR-TOOLED BY ELEMENTS ORGANIZER 14.0. THAT WAS WHAT DID IT. THAT WAS WHAT DOES IT FOREVER NOW."
...You may move away from Adobe software, but the tools cast a long shadow over you.
As you might have guessed, I haven't used Adobe Photoshop Elements Organizer for… a while now.
For film/positive scans, it'd be appropriate if the app that produced it would generate XMP history entries. Weirdly enough, Epson Scan doesn't add its name to metadata. SilverFast only uses legacy EXIF tags, which is weird.