For decades, every digital cinema camera has shared the same fundamental constraint. The image sensor is flat. That sounds trivial, but it has shaped the entire design of modern optics. Light does not naturally focus onto a flat surface. It prefers a curved one, much like the human retina. Because of this mismatch, lens designers are forced to compensate. They add more glass elements, introduce complex corrections, and accept tradeoffs in size, weight, and performance. The result is the cinema lenses we know today. Powerful, but often large, heavy, and optically complex. A new research paper published in Optics Express introduces a different direction. Instead of correcting the lens to match the sensor, it reshapes the sensor to match the light.
Source: https://ymcinema.com/2026/03/31/curved-sensors-large-format-filmmaking/