The digital camera appears when the shutter button is pressed halfway to focus! What’s going on with AF?

The !AF symbol means that the focus was unsuccessful, which means that the camera is not in focus, so the photos taken will definitely be false. This usually occurs because the object being photographed is too close to the camera or the color is too single. Stay away from the subject and find a place with color difference to focus.

As for the ghosting, it must be that your hands were shaking when taking the photo. It is recommended to increase the shutter speed, such as turning on the flash, increasing the sensitivity, or Increase outside light.