The ZULU6-HDX PRO combines ample power with a generous Apparent Field of View (AFOV) and light gathering capability as the result of the larger 50mm objective lenses. SIG SAUER's new HDX PRO lens system significantly reduces ambient glare, improves overall light transmission by 25 percent, and increases color accuracy to deliver an unrivaled Twilight Factor during the most critical moments of the day. OmniScan is the latest OIS (Optical Image Stabilization) software update which seamlessly blends Scan and Target modes using a digital accelerometer to automatically adjust the degree of stabilization based off movement. The slower the binoculars move, the greater the degree of stabilization applied and vice versa. OmniScan eliminates the need to toggle between settings, delivering the most advanced stabilization experience Sig has ever created.