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|Ease of use|
|Value for money|
Published on: 07 May 2018
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Price of Goods: £2,549.00
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The pure fluorite crystal used in these models is the optimum optical material for reducing chromatic aberration, providing the ultimate viewing experience. (TSN-883/884 only.)
The extraordinary light gathering capability supports observation during dusk and during dawn.
One of the major causes of deterioration of viewing quality in optics is chromatic aberration (color blur). Chromatic aberration occurs due to the dispersion of light and the different wavelengths of light focusing on different positions, resulting in a red or purple fringing around the image. The optimum optical material to minimize chromatic aberration is fluorite crystal.
A fluorite crystal with extremely low dispersion characteristics is used for the convex lens of the TSN-883/884 PROMINAR models. In place of an ordinary optical glass lens, the concave lens paired with the fluorite crystal lens is made of glass with special dispersion properties to reduce the chromatic aberration to a further degree.
Kowa uses the fluorite crystal exclusively in its flagship spotting scope and large binocular models. The fluorite used as make an optical lens is an artificially grown mono-crystal with "ultra-low dispersion", a characteristic that ordinary optical glass does not have.
It is an ideal lens material that almost completely eliminates chromatic aberration (color blur). The fluorite crystal produced by the sophisticated processing technology that Kowa has accumulated over the years guarantees the ultimate viewing experience.
The telephoto lens design of using 5 lens elements in 4 groups has successfully shortened the overall length of the scope while keeping a large diameter objective lens without sacrificing optical performance.
The adoption of an inner focusing system has made the prism box light and compact and at the same time decreases the amount of image movement when compared to conventional prism focusing systems.
The highly achromatized objective lens makes the scope as compact as a 60mm class scope without sacrificing performance.
The well established Kowa focus system has progressed to a new dual focus system. The quick focus, with a large and easy to turn knob, will focus from infinity to five meters in two revolutions.
The fine focus, with smooth movements and pinpoint accuracy, is extremely useful at high magnifications and for digiscoping systems.
Kowa's standard eyepiece bayonet mount has been passed down to these new spotting scopes with a new attractive feature. An eyepiece locking
mechanism has been added to the mount to prevent the eyepiece from getting lost or falling out unexpectedly.
The magnesium alloy body made by a sophisticated molding process called thixotrophic molding has the feel and strength of a traditional metal body with decreased weight when compared to other large-diameter scopes.
The rugged structure can tolerate the severest conditions and provides confidence and a sense of security for the user.
This combination of fluorite crystal and glass with special dispersion properties nearly eliminates chromatic aberration and redefines the standards of color brilliance.
This technology is the result of many years of optical design and has realized great reduction in chromatic aberration, while maintaining a large diameter lens and high contrast images when compared with conventional models.
The XD lens used in our TSN-883/884 PROMINAR models has characteristics similar to those of fluorite crystal to significantly reduce the chromatic aberration. All lenses are environmentally friendly Eco-Glass. (Eco-Glass is an environmentally friendly glass that does not contain lead or other harmful substances.)
All spotting scopes are waterproof to JIS protection class 7 and filled with dry nitrogen gas to prevent the lens from fogging.
JIS 7 = Japanese Industrial Standard / class 7 = Protected against the effects of temporary immersion in water.
Digital Camera Adapter: TSN-DA10
Eyepiece Converter: TSN-EC2 (For use of TSN-820M Series Eyepieces)
Eyepiece Converter: TSN-EC3 (For use of TSN-660/600 Series Eyepieces)
Warranty: Lifetime of the product
Kowa proudly introduces the new TE-11WZ 25-60x wide angle zoom eyepiece. Providing you with the ultimate viewing experience, the wide angle zoom TE-11WZ, with legendary Kowa XD lenses, delivers an outstanding, bright and detailed view of the terrain and wildlife you're seeking.
Kowa's finest eyepiece to date, the TE-11WZ features impressive optical enhancements, including a 22 percent wider field of view than previous Kowa eyepieces and a 17mm eye relief that remains constant throughout the zoom range. The 25x-60x magnification delivers a field of view that ranges from 126 to 69 feet at 1,000 yards, which meets or exceeds any other wide angle zoom eyepiece.
Measuring just 6mm longer and weighing 55 grams more than Kowa's current zoom eyepieces, this eyepiece is designed to mate seamlessly with Kowa's 880/770 series scope bodies.
The TE-11WZ eyepiece is easy to install. Simply push in the eyepiece and rotate it clockwise to lock it in place. Depress the side button and rotate to remove the eyepiece. The eyepiece locking mechanism prevents it from getting lost or falling out.
Get the most out of your Kowa spotting scope with the new TE-11WZ 25-60x eyepiece.
The optical construction of the TE-11WZ contains 2x XD-lenses. A first for any Kowa eyepiece.
When comparing with the TE-10Z, usage of the new TE-11WZ provides a wider field of view by approximately 20%
Images are delivered with outstanding sharpness even at 60x magnification.
Chromatic aberration is limited at the highest level.
Eye relief of 17mm remains constant throughout magnification range
Field of view at 1000 yds: 42-23 yds (126-69 ft)
Field of view: 2.4°- 1.32°
Eye relief: 17mm