Christopher Schodt has a good look at what it is and why you like it so much even if you didn’t know what it is:
Sure, lenses and sensors continue to improve, but the big developments have all been in software. So-called computational photography is using algorithms and even machine learning to stitch together multiple photos to yield better results than were previously possible from a tiny lens and sensor.
That’s why a new iPhone delivers photos that rival a $7,500 DSLR camera.
The biggest advances have all come from ways to stack or combine multiple images in the phone. Depending on how many images are stacked, and how clever the algorithms, this technique can be used to reduce noise, boost the tonal range, take clear shots in the dark, or even artificially boost resolution.
Software can make the photo better than the scene actually is.