Software support for moving photos from SLR => disk/gphotos is nonexistant. Huge miss that DSLR companies haven't made this work. They just gave up and ceded the market for "take a picture and conveniently share it on social media"
The Camera Control API (CCAPI) which Canon provides is actually very good it allows our company to create software which grabs the pictures of the camera and put it where we like.
See this question: https://photo.stackexchange.com/questions/128140/setup-to-ha...