Universal binocular area of use nature travel magnification 8 x lens diameter 42 mm prism system roof exit pupil diameter 53 mm min focus distance 18 m angle of view 72 field of view in 1000 m 126 m twilight factor 183 relative brightness 27 56 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coatings multi coated hdc multi coated weight 720 g material magnesium colour black special features f