A photosite is the light-sensitive element on a digital camera sensor, such as a CCD (Charge-Coupled Device) or CMOS sensor, that captures light and converts it into an electrical signal. Each photosite records a specific portion of the image, collectively forming the complete digital photograph.
Photosites are crucial for determining the resolution, detail, and dynamic range of a digital image. The size, number, and arrangement of photosites on a sensor influence image quality, noise levels, and low-light performance, making them a fundamental component in digital photography and imaging technology.