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The NATIONAL GEOGRAPHIC UG4037 8X42 SINGLE BRIDGE Binocular's popularity is due to its large aperture that produces bright images and high resolution, enough magnification for serious nature studies and spectator sports, in a comfortable to-hold roof prism design.
Use the large rear wheel to keep your feathered friend in focus and observe his behavior in crystal clarity through the coated BaK-7 lenses.
Extended bird-watching sessions in the wild are a breeze, thanks to the lightweight, water-resistant body and lanyard to keep the Binocular at your fingertips while you hike through the bush.
Higher magnification Binoculars (10x+) can see further out, but they limit your viewing area.
For example, when watching rugby, you get a clear zoomed-in picture of the players in the action, but you will see less of the field.
These 8X42 birding binoculars provide users with a broader field of view, so you get to see a close-up of all the action.
The Bak4 glasses have a rounded exit pupil. This results in better light transmission and sharper images than the more usual BK7 glasses, which have a square-shaped exit pupil.
Similarly, BK-4 prisms produce acceptable images, but their images are more rounded than in BAK-4 prisms.
BK-4 stands for Barium Crown Glass and is the best material for making prisms.
It has a higher refractive index and lower refraction than other materials, which makes it transmit light better without losing luminosity due to internal reflections within the device.
This high-power 8x42mm SINGLE BRIDGE Binocular provides minimal image shake and can be used by anyone who wears eyeglasses.
They're ideal for hunting, bird watching, whale watching, cruises, hiking, concerts, sports events, plane spotting, and loads more.
Key Features
Key Features
