Outdoor binoculars area of use watersports travel nature outdoor sports magnification 12 x lens diameter 50 mm prism system roof exit pupil diameter 417 mm min focus distance 25 m angle of view 47 field of view in 1000 m 82 m twilight factor 245 relative brightness 17 39 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating fully multi coated weight 780 g special features for spectacle wearers