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Nikon 7x50 Sports & Marine Compass Binoculars 7443 are totally waterproof, fogproof and shock resistant to survive imagein the harsh marine environment. Nikon chose individual focus for the 7x50's eyepieces to eliminate the need for constant focusing when most viewing is at longer distances. Each ocular lens of Nikon 7743 7x50mm Sports / Marine Binoculars is focused to meet the requirements of the user's eyes, then no further focusing is required. If lent to a mate, the skipper can return the focus to his own settings quickly and easily. The optimum ratio between magnification (7X) and objective lens (50mm) delivers an exit pupil of more than the 7mm that will satisfactorily accommodate the human eye during very low light conditions. The result is maximum light gathering at dawn, dusk or fog when navigation markers must not only be seen, but identified for safe piloting in coastal waters, harbors and inlets.
Specifications:
Focusing System: IF
Magnification x: 7
Objective Diameter (mm): 50
Angular Field of View Real: 7
Angular Field of View Apparent: 49
FOV at 1000 yds.(ft.): 366
Close Focus Distance (ft.): 82
Exit Pupil (mm): 7.1
Relative Brightness: 50.4
Eye Relief (mm): 18
Size (L&W) inches: 7.1x8
Size (L&W) grams: 181x203
Weight oz.: 42.7
Weight grams.: 1210
