Outdoor binoculars area of use nature travel outdoor sports magnification 9 x lens diameter 42 mm prism system roof exit pupil diameter 467 mm min focus distance 25 m angle of view 61 field of view in 1000 m 107 m twilight factor 194 relative brightness 21 81 focussing system central focus viewing straight binocular coatings pc phase coating super reflection coating smc multi coating weight 665 g eye relief 74 outdoor function waterproo