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// 29.9.2023 GA4 add to cart // 29.9.2023 GA4 add to cart

Kowa Genesis/XD 8.5x44

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Kowa Genesis/XD 8.5x44 Details

The unique size of the 44 mm objective lenses on these binoculars offers a number of benefits when compared to the more traditional 42 mm instruments.

Firstly, and just like a larger window in your house, the extra surface area makes it possible for them to capture and then let in more light and whilst this also makes them heavier, the difference it makes to the final product is really not that noticeable.

It also means that Kowa has been able to slightly increase the magnification to 8.5x, for improved image detail without sacrificing their low light capabilities. This can be demonstrated by their 5.2 mm exit pupil which is just about the same size as that of the more common 8x42 configuration.

This bright image and good low light performance in combination with the reasonably wide field of view that they produce makes them the ideal general use, birding and wildlife observation binocular that will excel at closer ranges and will perform well in thick forests or at dawn or dusk when the available light is not at its optimal level.

These binoculars also produce a long eye relief of 18.3 mm, which along with the twist-up eyecups is great news for eyeglass wearers as it gives you the space to be able to use the binoculars whilst wearing your glasses and still achieve the full field of view.

The closest focus distance of 1.7 m is also good and makes this Kowa binocular a great option if you like to observe things like flowers of butterflies at close range on occasion.

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Kowa Genesis/XD 8.5x44 Specifications

Binoculars seriesKowa Genesis
Made inJapan
In production since
Warranty10 years
Type of prism Roof - Schmidt/Pechan
Variable magnification No
Magnification. 8.5x
Diopter adjustment
Lens size diameter. 44 mm
Exit pupil. 5.8203 mm
Field of view - FOV... 136.223m/1000m
Field of view (angular). 6.99°
Apperent FOV (angular).
Eye relief distance. 20.5035mm
Closest focusing distance. 1.9028m
Twilight Factor 19.3
Light transmittance
Relative Brightness 27.6
Lens coatings Fully Multicoated
Length.165 mm
Width.155.7382 mm
Height.72.2264 mm
Working temperature range
Filled with Nitrogen
Focusing system Central
Diopter setting locationRight eye-piece
Minimal interpupillary distance.0 mm
Maximal interpupillary distance.0 mm
Type of BodySingle hinge
Water proof Yes
Fogproof Yes
Tripod compliantNo
Built-in Compass No
Built in Range finderNo
Image stabilization (IS) No
Able to float No


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