This document describes Axis's method for measuring the minimum illumination required for their network video cameras to produce images of acceptable quality. The Axis MMI (Measurement of Minimum Illumination) method evaluates cameras based on luminance, black level, signal-to-noise ratio, and resolution under decreasing levels of illumination. For each dimension, the illumination level where the camera fails the criteria is recorded. The minimum illumination is defined as the highest or worst performing of these criteria. The method utilizes standardized test charts under controlled lighting conditions to objectively evaluate camera performance under low light.