What does special meters measure in a digital monitor?

Special meters in a digital monitor are used primarily to measure spatial luminance, which refers to the intensity of light emitted from a specific area of the screen. This measurement provides essential data about how the light is distributed across different parts of the display, enabling more accurate calibration and assessment of the monitor's performance.

Understanding spatial luminance is crucial when it comes to ensuring that a monitor reproduces images faithfully, particularly in applications like medical imaging or broadcasting, where precise luminance levels are essential for interpreting visual data accurately. By focusing on spatial luminance, technicians can identify any inconsistencies or problems in the display's performance, thereby enhancing the overall quality of the visual information presented.