Ok, so it's not about sensor size, it's about lenses. You don't really need lenses though: https://petapixel.com/2017/06/22/caltech-made-sensor-lensless-camera-

Ok, so it's not about sensor size, it's about lenses. You don't really need lenses though: https://petapixel.com/2017/06/22/caltech-made-sensor-lensless-camera-future/ https://petapixel.com/2017/06/22/caltech-made-sensor-lensles... (also see links at the end of that article)