Spotting scope area of use nature bird watching wildlife watching golf hunting magnification 45 x lens diameter 50 mm zoom factor 3 times exit pupil diameter 1 mm min focus distance 10 m angle of view 241 field of view in 1000 m 420 m twilight factor 474 relative brightness 1 23 viewing straight monocular coating fully multi coated weight 750 g eye relief 18 included in delivery tripod hardcase eyepiece outdoor function waterproof pri