Well I see not many people are talking about it anymore,but the camera certainly need more optimisation with portrait mode.
Also,the normal camera seems to put a circular high exposure glow behind the subject when clicking pictures against the light(even after dropping the exposure to the lowest).
Pictures in low light seems to be lit up even though night mode is off.Just takes away the nightly frame you want to capture.
Although expert mode can be used ,but not all users are able to do that.
So I guess nothing looks into it very seriously.
