The IMX251 is a 42.18-megapixel CMOS image sensor manufactured by Sony. It delivers a 7952 × 5304 pixel array with a 4.5 µm pixel pitch, providing efficient photon collection at each photosite. The optical format spans a 43.014 mm diagonal with a 994:663 aspect ratio, placing it in the large-format category used in cinema, scientific, and aerial imaging. With 4.5 µm pixels, the sensor features compact pixel pitch suited for high-resolution imaging in space-constrained camera designs.