Kowa TSN-554 50mm Prominar Fluorite Crystal Spotting Scope (Straight Body)

Description
Customer Reviews

Last month the 550 once again received top honors in a third independent scope review. At a mere 28 ounces, it easily & consistently tops the field as the best compact scope. However, the performance was compared favorably to the industry's most expensive 65 mm spotting scope models (costing >2x and weighing >3x more). National Audubon Society ranked this the best performing scope under $2,000 dollars in their review and Backwoods Pursuit wrote "super compact in size, light as a feather, but most of all, gives you an uncompromising image in a small package" suggesting it as the perfect solution for consumers wanting the best lightweight performer! So don't let the size fool you. Find out what all the fuss is about yourself, & see the Kowa TSN-550 series spotting scopes at a Kowa dealer near you & take advantage of these unprecedented savings!

Product Highlights

Straight-Through Viewing
15-45x Zoom Eyepiece
55mm Objective Lens
Ultra Low-Dispersion PROMINAR Glass
Porro Prism Optical Path
Fully Multi-Coated Lenses
Lightweight Polycarbonate Chassis
Nitrogen-Filled, Water and Fogproof
1/4"-20 or 3/8"-16 Tripod Mount
Fine and Coarse Two-Speed Focusing

The Prominar 553 and 554 feature Pure Fluorite Objectives like the 880 series in a 55mm package with integrated zoom eyepieces. More compact, lighter and brighter than anything in its class!

At less than a foot long, the straight-through viewing Kowa TSN-554 15-45x55 Spotting Scope is the ideal companion wherever you go to glass. It employs the ultra low-dispersion PROMINAR fluoride glass that eliminates chromatic aberrations that, when coupled with the fully multi-coated optics and two-speed focusing mechanism, produce bright and clear tack-sharp high-contrast images with accurate color rendition for an immersive observational experience. The impressive zoom range allows you to take in a wide field of view for general viewing purposes, with the ability to draw subjects in close for more detailed observations. This version of the TSN-550 is configured with the eyepiece set in-line with the optical tube for straight-through viewing to make acquiring subjects easy and tracking moving subjects fast.

To reduce weight, without sacrificing strength or durability, the chassis is made of a polycarbonate material and wrapped in a slip-resistant armoring. A rubberized and textured zoom collar and focus wheel make adjustments fast and easy, even when wearing gloves. The optical tube is nitrogen-filled and O-ring sealed to be waterproof, and resistant to internal fogging when moving through extreme temperature changes or environmental conditions. To increase your mounting options, the TSN-554 comes outfitted with both a 1/4"-20 and 3/8"-16 tripod attachment — making it compatible with most photo, video, and field tripods on the market.

Optical Performance

Wide 15-45x fixed zoom eyepiece
55mm aperture
Porro prism optical path
Ultra low-dispersion PROMINAR fluorite glass elements eliminates chromatic aberration, which causes halos, astigmatism, and fringing, for improved color rendition and contrast
Fully multi-coated optics maximize light transmission through to improve image brightness, color rendition, and contrast
132-69' field of view at 1000-yards

Use and Handling

Straight-though viewing eyepiece makes finding subjects fast and tracking moving targets easy
Integrated aiming sight
Smooth and precise fine and coarse two-speed focusing mechanism moves through the entire focus range in two turns
Rubberized and textured zoom collar and focusing wheel
58mm objective lens filter threads
Twist-up eyecup for comfortable use with or without eyewear
3/8"-16 and 1/4"-20 mount to accommodate most photo, video, and field tripods
Long 16.5-16mm eye relief
3.7-1.2mm exit pupil

Construction Details

Lightweight and impact-resistant polycarbonate chassis
Nitrogen-filled, IPX7-rated to be waterproof, and resistant to internal fogging when moving through extreme temperature changes and conditions
Oil-resistant KR exterior lens coatings makes it easy for dirt, sap, and oil to be easily cleaned off without smudges or residue
Retractable sunshade reduces glare and lens-flare, and keeps snow and rain off the objective, clearer viewing
Extremely lightweight: 28 ounces

Specifications

Magnification	15 - 45x
Objective Lens Diameter	55 mm
Field of View	132.0 - 69.0' @ 1000 yd / 43.9 - 23.0 m @ 1000 m
Minimum Focus Distance	9.8' / 3.0 m
Exit Pupil Diameter	3.7 - 1.2 mm
Eye Relief	16.5 - 16.0 mm
Filter Thread	58 mm
Mounting Thread	3/8"-16 or 1/4"-20
Weatherproofing	Nitrogen-filled, water and fogproof
Dimensions	11.3 x 3.4 x 2.6" / 28.7 x 8.6 x 6.6 cm
Weight	28.2 oz / 799.5 g

Packaging Info
Package Weight	3.25 lb
Box Dimensions (LxWxH)	12.8 x 7.4 x 3.6"

In the Box

Kowa TSN-554 15-45x55 PROMINAR Spotting Scope (Straight-Viewing)

Limited Lifetime Warranty

Customer Review
Kowa TSN-553 15-45x55 Spotting Scope

Expert Review
Kowa compare with Swarovski ATX & Vortex 65mm

Rating Snapshot

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Average Customer Ratings

5.0

Highly recommended.

I recently purchased a Kowa TSN-554, with Neoprene case and hand support. It has proven to far exceed my expectations. I purchased it primarily to be a more convenient option to scope with a window mount as I have a TSN -99, which is a bit large for that application. It fills that role well and is easily hand held, which makes it fantastic to carry when hiking with minimal gear. As far as optics go, I have the luxury of comparing to Kowa’s flagship spotting scope. It does not disappoint in the least. There are obvious advantages to the 99 due to magnification and objective lens size, but the image quality of the 554 is in the same league as its big sibling. I am simply amazed that such a compact and portable scope delivers so much. Highly recommended.

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Reviewed by: Warren from SK, CA on 4/12/2023

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Kowa TSN-554 55mm Prominar Fluorite Crystal Spotting Scope (Straight Body)

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