Not if you want to avoid itunes or icloud.
But, yeah, I have lightening drives that connect directly to download pictures onto (well, purchased as a gift).. They even also have USB to be read in a computer.
A VM running macOS and a script. Open Photos.app and sync with ‘Download Originals’ checked. Quit Photos.app and rsync the folder ‘Originals’ out of the app bundle and onto a NAS. Once finished, reopen Photos.app.
It’s quite horrible getting the script to run as permissions get tricky with chrontab, so I used Lingon X to schedule it.
https://www.apple.com/shop/product/MD821AM/A/lightning-to-us...