I'm using an iPhone with iOS 8.4, and a Mac with Yosemite using the Photos app and syncing with iTunes. iCloud Photo Library is turned off on both the Mac and the iPhone.
After syncing with iTunes there are photos on the iPhone that should not be there; they are not included in the "selected albums" list in iTunes. Some of them are no longer in my Photos library (on the Mac) at all. But after many syncs they still appear on the iPhone.
When I look at the offending photos there is no trash can icon (like there would be if they were in the Camera Roll), and tapping the Edit button brings up the message "This photo is not editable".
How can I delete these rogue photos? An ideal solution would be one that actually "syncs" my phone to the selected albums list in iTunes (ie. removing any photos that aren't in that list). But a way to manually delete photos would also be appreciated.
Edit: None of the photos in question were ever shared with iCloud sharing. They do not appear in any Shared Albums, and turning off iCloud sharing has no effect.