Hunting binoculars outdoor binoculars area of use travel nature theatre outdoor sports hunting magnification 7 x lens diameter 50 mm prism system porro exit pupil diameter 714 mm min focus distance 46 m angle of view 7 field of view in 1000 m 122 m twilight factor 187 relative brightness 50 98 focussing system central focus viewing straight binocular coating multi coated weight 750 g eye relief 15 special features rubber armouring pri