[ Thanks to Dmitri
Popov for this link. ]
“While digiKam won?t rival dedicated software for tethered
shooting, you can use the application?s Import interface to trigger
the connected camera and instantly fetch photos from it. This
functionality can come in handy when you want to have an instant
preview of photos you take on a large screen.“To make use of this feature, connect your camera to the machine
running digiKam, and turn the camera on. In digiKam, choose Import
→ Cameras and select your camera model. You can then trigger
the camera using the Capture button. There are a couple of things
you need to keep in mind, though.”