What is the main advantage of the Kowa TSN-66A's pure fluorite crystal lens?
The primary advantage of the pure fluorite crystal objective is that it virtually eliminates chromatic aberration (color fringing). This results in outstandingly high contrast and true-to-life color rendition, allowing you to see fine details and subtle color variations that would be lost in a scope using standard glass lenses.
How does the dual-focus system on the Kowa TSN-66A work?
The Kowa TSN-66A focus knob has a two-step mechanism. The quick focus brings an object that is well out of focus into focus 3 times faster than the fine focus, covering 6 m to infinity in two revolutions. The fine focus provides enabling precise, minute adjustments to achieve critical sharpness, which is especially important at the maximum 60x magnification.
How does the angled TSN-66A differ from the straight TSN-66S?
On the angled TSN-66A the eyepiece sits at an angle to the body; on the straight TSN-66S it is in line with the objective. Kowa offers both as ZM SET kits with the same 66 mm fluorite crystal objective, dual focus, TE-11WZ II eyepiece and VESTA GO tripod, so the choice comes down to the viewing position you prefer.
What are the key benefits of the included Vanguard VESTA GO 264CV12 tripod in this Kowa kit?
Kowa recommends the Vanguard VESTA GO 264CV12 for its compact TSN-66 and TSN-55 PROMINAR models. Its key benefits are:
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Lightweight Portability: Carbon fiber construction keeps the weight to just 3 lbs.
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Stability: Carbon fiber legs give strength and vibration resistance, and a spring-loaded ballast hook adds stability in wind.
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Smooth Motion: The VEO PV-12 fluid video head has a built-in counterbalancing spring for smooth, controlled panning and tilting.
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Compact Size: It folds down to just over 18 inches, making the entire kit easy to transport.
Can I use other eyepieces with the Kowa TSN-66A spotting scope?
Yes. The Kowa TSN-66A uses a bayonet mount that is compatible with other eyepieces in Kowa's high-end lineup, such as the TE-80XW (fixed 35x, 147.6 ft field of view at 1,000 yds on the TSN-66) or the TE-20H long eye relief eyepiece. This kit includes the versatile TE-11WZ II 25-60x zoom, which is an excellent all-around choice.
Is the Kowa TSN-66A kit suitable for digiscoping?
Absolutely. The TSN-66A is an excellent choice for digiscoping due to its exceptionally sharp fluorite optics. The scope body features a dedicated accessory collar designed for attaching Kowa camera adapters such as the TSN-PA7 or TSN-DA10 (sold separately), allowing you to capture high-quality photos and videos through the eyepiece.
What is the minimum focusing distance of the TSN-66A, and where is that useful?
The minimum focusing distance is 3.5 meters (11.5 feet). This is extremely useful for observing subjects that are very close, such as butterflies on a nearby flower, insects, or birds at a backyard feeder. It allows you to use the scope's magnification to see fine detail on nearby subjects.
How do I attach a filter to the Kowa TSN-66A objective lens?
The Kowa TSN-66A has a 72mm filter thread in front of the objective lens. Kowa's manual states that it allows various types of filters to be attached; Kowa makes the TP-72FT 72mm protection filter for the TSN-66.
How should I clean the lenses on my Kowa TSN-66A?
First, use a blower, compressed air or a soft hairbrush to remove any loose dust or grit. Then gently clean the lens with a light circular motion using an optics cleaning cloth, gauze or cleaning paper. Commercial lens cleaners can leave a film on the lens surface, so use only the smallest possible amounts. Do not use organic solvents on the scope.
What does the Kowa Limited Lifetime Warranty cover?
The Kowa Limited Lifetime Warranty covers the original owner against defects in materials and workmanship for the lifetime of the product, provided it was purchased from an authorized North American retailer. It does not cover damage from misuse, unauthorized repair, or normal wear and tear; lens caps and cases are covered for their lifetime but not for accidental loss. Kowa requests product registration within 30 days of purchase. The Vanguard tripod is covered by Vanguard's own warranty.
