Let's say I'm photographing someone who is backlit, against the sky. By default, the person looks like black silhouette since the camera chooses an exposure tha

Let's say I'm photographing someone who is backlit, against the sky. By default, the person looks like black silhouette since the camera chooses an exposure that doesn't make the sky completely white. I also don't want to have the person in the center of the frame, because that would be really boring framing. Photography 101. On my current phone I can do the framing how I want, then touch the person on the touch screen. The phone instantly readjusts the exposure upwards so that now the person is more properly exposed and the sky is overexposed. This is what I wanted. Then I continue on to take the photo. This doesn't seem to work on many other phones. I never enter any menus or do any wheel adjustments. It takes extremely little time and is a very natural workflow. On a rangefinder camera one would aim the center of the screen at the person, then hold the shutter halfway so it would pick the exposure from there, then frame (=aim somewhere else) and take the photo. If you have autofocus, it also focuses on the half-press. In neither case are there any manual adjustments or looking at any buttons. Your eyes are on the viewfinder / photo area all the time.