Hunting binoculars outdoor binoculars area of use hunting outdoor sports magnification 10 x lens diameter 50 mm prism system porro exit pupil diameter 5 mm min focus distance 76 m angle of view 57 field of view in 1000 m 100 m twilight factor 224 relative brightness 25 focussing system central focus viewing straight binocular coating fully coated weight 765 g eye relief 9 special features rubber armouring prismenglas bk 7