Optical resolution refers to the true pixel-capturing capability of a digital imaging device, such as a scanner or camera. It is the maximum level of detail that the sensor or scanning system can record without relying on software enhancement.
Many devices also quote an interpolated resolution, which artificially increases pixel count by calculating additional pixels from the optical data. Unlike interpolated resolution, optical resolution reflects the genuine quality and detail captured by the device, making it the most reliable specification to consider when evaluating image sharpness and clarity.