Outdoor binoculars area of use watersports travel nature outdoor sports magnification 8 x lens diameter 42 mm prism system roof exit pupil diameter 525 mm min focus distance 198 m angle of view 74 field of view in 1000 m 129 m twilight factor 183 relative brightness 27 56 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating fully multi coated weight 670 g special features for spectacle wearers