Image Stabilizers are necessary devices for those who work in vibrating environments and/or a high optical magnification is needed. Helicopter pilots, boaters, road police, fishery inspectors, yachtsmen, and many other professionals need these types of optics to get a clear image without degradation caused by vibrations of the moving platforms.   SIB 16X40 GR SIB 16X40 WP   SIB 20X50M