Outdoor binoculars hunting binoculars area of use hunting nature outdoor sports magnification 8 x lens diameter 42 mm prism system porro exit pupil diameter 525 mm min focus distance 55 m angle of view 79 field of view in 1000 m 137 m twilight factor 183 relative brightness 27 56 focussing system central focus viewing straight binocular coating multi coated weight 771 g eye relief 17 outdoor function waterproof prismenglas bak 4