Well, camera lenses are round. And when round light hits a square image sensor, it does so unevenly, resulting in a photo with less-than-optimal sharpness. Improvements in lens technology have allowed manufacturers to address a lot of the issues caused by traditional image sensors — like adding more glass to the lens to “correct” the light path. However, as Andy Heather of DigitalRev describes, these extra optical elements create a longer path for the light, and more light is lost in the process, which isn’t good either.
A curved camera sensor solves both of these issues. First, it’s shaped in such a way that the cone of light hits every part of the image sensor at the same time, resulting in a sharper, more consistent image. Curved sensors also eliminate the need for a lens to have those extra “corrective” elements. This gives light a more direct path to the sensor, meaning the lens you use with the camera can be better in low-light settings.
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