Originally posted by leekil Is this basically doing image stacking to reduce noise, but by taking multiple photos at once to avoid movement during longer exposures?
All 24 camera (I think that's the latest count) are on a motorized mount that offsets Earth's rotation, so exposure length can be long. The purpose of multiple photos is to get a stack 24 times deeper within a given timeframe. It also opens up some new processing options compared to a single sensor because hot pixels and dust spots will only appear in 1/24 of the frames.
Originally posted by ppohja Why these problems are not affecting phone makers?
They do affect phones. Stitching/stacking errors occur, but may be less objectionable than the increased noise and poor dynamic range of a single sensor phone image. Parallax can't always be processed out, either, but phones have tiny lenses so it's possible to put them close together.