Outdoor binoculars area of use travel watersports outdoor sports magnification 8 x lens diameter 30 mm prism system roof exit pupil diameter 375 mm min focus distance 3 m angle of view 71 field of view in 1000 m 124 m twilight factor 155 relative brightness 14 06 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating swarobright weight 500 g special features for spectacle wearers rubber armouring