Hunting binoculars ed extra low dispersion glass lenses area of use watersports travel nature hunting magnification 10 x lens diameter 56 mm prism system roof exit pupil diameter 56 mm min focus distance 3 m angle of view 6 field of view in 1000 m 105 m twilight factor 237 relative brightness 31 36 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating fully multi coated weight 1 066 g special f