While I have been able to do all of these things in one way or another, I have not been able to do it seamlessly nor have I continued to attempt some of these things with the current apps available. By default, the iPad Photos app works because it is the mechanism through which photos are imported. It is possible to avoid using the Photos app, but I haven’t found a way to avoid it completely, so I use it. When I first connect a SD card to the card reader, I import the photos to my iPad with this app. One reason that I do like using it is because the file name remains unchanged when importing this way. That is not the case with some import mechanisms. I have abandoned tethered shooting with the iPad, for now…..

Source: doncraigphoto.com

Don Craig Fuji X-E2 tethering