Outdoor binoculars hunting binoculars area of use hunting nature outdoor sports magnification 7 x lens diameter 35 mm prism system porro exit pupil diameter 5 mm angle of view 11 field of view in 1000 m 193 m twilight factor 157 relative brightness 25 focussing system fixed focus viewing straight binocular coating fully coated weight 638 g special features rubber armouring prismenglas bk 7