Apple is working to solve the problem of the BeautyGate: with iOS 12.1, the front camera of the iPhone XS, XS Max and XR will better manage the skin effect of the photos that depict the face in the foreground.
The “BeautyGate” started when iPhone XS and XS Max users noticed that the selfie taken with the front camera integrated a sort of filter that was giving the image a smooth the skin effect.
The same happens with the iPhone XR, so much so that The Verge asked Apple if it was a problem or not. Apple replied that yes, images taken with the front camera of the new iPhone have a level of noise reduction too high and this goes to create a smooth effect on the whole picture, not just on skin tones:
Essentially, Smart HDR was choosing the wrong base frame for HDR processing when you took a selfie. Instead of choosing a frame with a short shutter speed to freeze motion and preserve detail, it would sometimes choose a frame with longer shutter speed. The front camera also does not have optical image stabilization, so it takes blurrier shots at the same shutter speed as the rear, stabilized camera. The result is a loss of detail that looks like smoothing on the front camera.
This adjustment is not yet available in the beta version of iOS 12.1 because it is still being tested, but should, therefore, be available with the release of the final version of this update.
(Via: The Verge)