7 x 50 Boat Binoculars BK7 Porro Prism WS Series Marine Navigation
Equipment
Brief Introduction:
Binoculars are described using two numbers, such as 7 x 50 or 8 x
25. The first number identifies the
magnification or power. The second is the diameter of the objective
lens (the lens at the front) in
millimeters. Magnification power describes how much closer objects
appear when you view them. In a
7 x 50 binocular, the image is magnified seven times. Increased
magnification reduces the brightness
of the image, so as magnification increases, binoculars require
increasingly larger objective lenses to
maintain brightness. The larger their size, the more light they can
gather.
Main Specification:
Specification:7X50
Field of Angle:7.5°
Field of View:130m/1000m or 345ft/1000yds
Exit Pupil:6.5mm
Eye-relief:15mm
Minimum Focus Distance:8m
Size: 19.5 x 6.5 x 19mm
Weight: 870g
Focus System: Center Focus
Prism: BK7 porro prism
1, Appearance and material: concise and easy, ergonomic design,
lens barrel internal to the metal structure, external package for
high quality non-slip rubber cortex, wear resistance and not easy
to dirty,
can be used in a variety of environments.
2, Eyepiece system: adopting the all-optical glass lenses,
high-definition pervious to light blue film plating,
high light transmittance, can be 100% of the reflected light, the
image is more clear and bright.In the
evening even in weak light environment, also can see very clear.
3, Lens system: adopting the all-optical glass lenses, multilayer
composite broadband light blue green
film.Good light transmittance, no color difference, imaging and
bright, clear and sharp, low refractive
index, which can effectively reduce the eye fatigue.
4, Central focus fast accurate, watch the scenery, the users only
need to turn the telescope in the middle
of the wheel, you can change the focal length, so as to realize
precise focus, obtain high-resolution
imaging.
5, Right eye fine balance parallax: due to the differences between
left and right eye eyesight may, when
using, clarity first adjusted the left eye, and then a slight turn
right eyepiece, to achieve the best effect,
watch the scenery, the Lord will not appear dizziness, blurred.
6, Variable times: the telescope with functions of changing times,
change times pull rod, multiples of the
size can change a telescope.
