Nedis 20-60x60 HD Spotting Scope with Tripod and Carrying Bag, 45 Degree Angled Telescope for Target Shooting Wildlife Bird Watching - Black

-The spotting scope has a magnification of 20 to 60x.The magnification number indicates how many time an object is magnified by the lens.The larger the number the higher the magnification.-Objective lens diameter:60 mm.This indicates how much light is let through the spotting scope lens.The bigger the lens the more light comes in but also means the spotting scope will be more heavy.-The field of view at a 1000 meters distance is 38 meter.Making it ideal for still object and animals.-The spotting scope is best used during day time.It has an exit pupil diameter of 3 mm.The darker the environment the larger your pupil will become.When your pupil becomes larger than the exit pupil diameter visibility will be less clear.A human eye pupil diameter can change from 2 mm up until 7 mm.So in case you expect use a binocular often in the dark then a high exit pupil diameter will be important.7 mm can even be used at night.5 mm is suitable for dusk and dawn.Under 5 mm is more suitable in day-time.-