Universal binocular area of use watersports travel nature magnification 8 x lens diameter 56 mm prism system schmidt pechan exit pupil diameter 7 mm min focus distance 35 m angle of view 714 field of view in 1000 m 125 m twilight factor 212 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating lotutec weight 1 265 g eye relief 18