4:3. Like mirrorless and dslr.
Maybe because 16:9 is post-processed version. Native aspect ratio of the sensor is 4:3, but I guess Apple could’ve saved it back as HEIC.I noticed that only 4:3 saves photos as HEIC while 16:9 saves as jpeg. What is the reason for this?
MB is 16:1016:9 finally! Can you view photos full screen on the Macbook. They look really good.