Leupold BX-5 Santiam HD 10x50 Binoculars GrayThe Leupold BX 5 Santiam HD 10x50 Binoculars in Gray provide nearly 42% more light than the 10xx42 BX 5, so they are more suited to low light conditions. The trade offs are an extra 8 ounces, a longer body, a narrower FOV (304' at 1000 yards), and a significantly longer close focus of 11. 4'. The Leupold BX 5 Santiam 10x50 features all the other attributes of the series, with their Twilight Max HD Light Management System, water and fog proofing,