The GSPRINT4521 is a 20.97-megapixel monochrome CMOS image sensor manufactured by Gpixel. It delivers a 5120 × 4096 pixel array with a 4.5 µm pixel pitch, providing efficient photon collection at each photosite. The optical format spans a 29.506 mm diagonal with a 0.211111111 aspect ratio, suitable for medium-format and high-end machine vision systems. With 4.5 µm pixels, the sensor features compact pixel pitch suited for high-resolution imaging in space-constrained camera designs.