Outfitted with their proprietary Vari-Angle prism electronic image stabilization system, the Canon 15x50 IS All-Weather Image Stabilized Binocular is an ideal optic for bird and nature watching, marine use, or astronomical use. Its quick-response time and '0.7' correction angle easily compensates for the common hand-shake that can make viewing through binoculars of this magnification difficult or disorientating. A single-activation button located precisely where the right forefinger naturally rests makes using them easy and allows you to concentrate on viewing without distractions.