The OLYMPUS Stream image analysis software V.2.4.2 from Olympus Corp. offers an improved image analysis method for steel quality control in manufacturing. The update adds device support and new capabilities to determine the nonmetallic inclusion content in steel. An inclusion content mode detects and classifies individual fields on a large scan area, expanding on the software’s capabilities to detect and classify individual inclusions in worst-field mode. It provides statistical results of inclusion content on the entire scan area according to three international standards: ASTM E45-18, ISO 4967:2013, and EN 10247:2017. This version is also optimized for the MC 1500 SCHOTT VisiLED controller, enabling users to easily control LED ring light illumination on their stereo microscopes and remove halation caused by LED reflection on the sample surface.