Why does my iphone6 camera look like a ghost?

The ghosting of iPhone photos may be caused by blur and dirt on the phone camera, or the camera is out of focus. Solution: Users can wipe the camera with alcohol to keep it clean, or tap the position where the screen needs to be focused when taking pictures to solve the problem.

Extended data:

Camera modes in iPhone, iPad and iPod touch are helpful for taking ideal photos or videos. Just swipe left or right on the camera screen to use different modes. You can choose photo, square, panorama, video, time-lapse photography and slow-motion mode.

The depth of field effect in iPhone portrait mode, photos taken on iPhone 7 Plus and newer models can present unprecedented excellent effects. Before you begin, make sure that you have the latest version of iOS to access the various functions of the camera application.

On the iPhone 7 Plus and later models, portrait mode uses dual cameras to create a depth of field effect. You can take pictures with clear subject and blurred background. If you have an iPhone X or later, you can also take a selfie in portrait mode with the front camera.

References:

Apple Support-Use Camera Mode on iPhone