Spotting scope area of use travel digiscoping bird watching wildlife watching nature golf hunting magnification 20 x lens diameter 80 mm suitable for intermediate expert exit pupil diameter 4 mm min focus distance 46 m angle of view 1 field of view in 1000 m 17 m twilight factor 40 relative brightness 16 viewing monocular 45 angled coating fully multi coated weight 1 484 g eye relief 17 colour black included in delivery eyepiece sun v