Oh, good point. In my first screenshot, the iPhone shows up twice in the leftmost list - the first with your apps and the second with photos from camera roll.
I wouldn't use Nautilus to import photos, though - I'd use something like digiKam (1 - showing my connected iPhone).
The first time you connect your iPhone, it'll ask if you want to 'Trust this computer'. After trusting, you need to run 'idevicepair pair' (2) in the terminal to pair. Then your iPhone (or iPad) will show up in Nautilus.
One use case: Infuse is my iOS video player, and copying movies or serials over is as simple as connecting the iPad or iPhone and copying to Infuse's storage. It copies at 20-30 MBs/sec, which is plenty fast.
1: https://nexus.armylane.com/files/digiKam-iPhone-import.png
2: https://manpages.debian.org/stretch/libimobiledevice-utils/i...