Description
The binoculars are designed for use on the water and have the following features:
· Autofocus
· Magnification/lens 7x50
· BK-7 Prism
· Viewing angle: 7.1 (119 m V/1000 m)
· Rubber-reinforced - provides a good non-slip grip
· Foldable eyepieces - great advantage for glasses wearers
· Water-repellent
· Comes with bag and strap
Autofocus
Automatically maintains focus.
Magnification/lens 7x50
The image is 7 times larger than what the naked eye sees. 7x is the recommended magnification in marine binoculars. The second number 50 indicates the diameter of the lens. The higher the number, the better the light penetration. This is an advantage in poor light. For marine use, a 50 mm lens is recommended.
BK-7 Prism
Borosilicate prism material of class B. Has good ability to transport light and image from the objective, through the prisms to the eyepiece and out to the eye.
Viewing angle: 7.1º
The viewing angle in degrees indicates the width of the image that can be seen at a distance of 1000 meters. A viewing angle of 7.1º gives a width of 119 m at a distance of 1000 meters.
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