These popular travel binoculars have features normally seen on much higher priced models. Multicoated optics and Bak4 high index prisms deliver a bright, sharp view during low-light hours of early morning and late evening. Turn-and-slide eyecups and a central focus knob are easy to adjust, and the durable, rubber-armoured body protects them against hard use. Aspheric eyepiece provide a field of view that is flat and clear from edge to edge, without distortion.
- Magnification 10x.
- Objective diameter is 25mm.
- Angular field of view (real / degree) is 5.
- Angular field of view (apparent / degree) is 47.2.
- Field of view is 87 at 1000m.
- Exit pupil is 2.5mm.
- Relative brightness is 6.3.
- Eye relief is 11.1mm.
- Close focusing distance is 3m.
- Interpupillary distance adjustment is 56-72mm.
This tells you how many times an object is magnified when observed through the binoculars.
The diameter of the objective lens will impact how bright, sharp, and comfortable your view is. Generally, bigger is better.
Lens coatings reduce light loss and glare to increase contrast and diminish eyestrain. Coated: one layer on external surfaces only. Fully coated: every surface is coated. Multi-coated: multiple layers on some of the surfaces. Fully multi-coated: multiple layers on every optical surface.
Field of view
The widest dimension of circular viewing area that you can see.
The nearest distance at which the binoculars will focus on an object.
A measure of image brightness. The greater the realtive brightness number the better the binoculars will perform in dim light.
The diameter of the objective (outside) lens divided by the binocular's magnification. It indicates the amount of light that reaches your eye (most noticeable in low light conditions). Higher numbers offer brighter images.
The distance between the eyepiece and your eye while still allowing entire field of view. Long eye relief is good for eyeglass wearers.
|Dimensions||11 x 5.08cm|
Waterproof binoculars are assembled with O-rings and are purged with nitrogen to avoid condensation. They are ideal for boating or use in rainy weather.
These binoculars can be adjusted for variances between right and left eye vision.