Outdoor binoculars area of use travel outdoor sports magnification 8 x lens diameter 40 mm prism system porro exit pupil diameter 5 mm min focus distance 5 m angle of view 82 field of view in 1000 m 143 m twilight factor 179 relative brightness 25 diopter correction yes dpt focussing system central focus viewing straight binocular coating fully coated weight 740 g special features for spectacle wearers rubber armouring