I have an iPhone 5S running iOS 8.1.3. I have removed all photos from the phone (i.e. the Camera Roll is empty). However, under Settings -> General -> Usage -> Manage Storage, it reports that 1.9 GB is still in use for Photos & Camera. Specifically, underneath that, it reports that 1.9 GB is being used for the Photo Library (which is ostensibly empty). This is a large chunk of the storage on my 16 GB phone!
I have tried doing a factory reset of the phone and restoring from backup, with no effect; it still reports the excessive storage usage. I've checked the following:
The Photo Library (and Recently Deleted) is empty.
Photo Stream is not enabled.
iCloud "Photos" is not enabled.
There is no photo sharing of any kind enabled.
Is there anything else that I should look at to determine why the incorrect amount of usage is being reported?