Fujinon Techno-Stabi TS-L 2040 specs and field of view
At 20x, the TS-L 2040 packs its stabilized image into 30.1 oz and shows 178 ft at 1,000 yd. Eye relief is 15.4 mm.
- Field of view
- 178 ftat 1,000 yd
- Eye relief
- 15.4 mm
- Close focus
- 16.4 ft
- Weight
- 30.1 oz
- Exit pupil
- 2 mmcalculated
Why pick it
- Image stabilized
- Waterproof
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Who the Techno-Stabi TS-L 2040 suits
Long, steady looks at far subjects are the job here, with a 28.3 calculated twilight factor and a 16.4 ft close focus. The IPX7 rating covers 1 m for 30 min.
The calculated exit pupil is only 2 mm and the field is the narrowest of the Techno-Stabi models, so scanning and dim light both get harder.
Techno-Stabi TS-L 2040 or another model: the best binoculars by maker figures shows how the popular ones differ.
Techno-Stabi TS-L 2040 specifications
Techno-Stabi TS-L 2040 figures as Fujinon prints them; rows marked * are calculated from the 20x40 size.
| Magnification | 20x |
|---|---|
| Objective lens | 40 mm |
| Field of view | 178 ft at 1,000 yd (59 m at 1,000 m) |
| Angular field of view | 3.4° |
| Apparent field of view | 61.4° |
| Eye relief | 15.4 mm |
| Close focus | 16.4 ft (5 m) |
| Eye spacing range | 56 to 70 mm |
| Weight | 30.1 oz (853 g) |
| Width | 4.8 in (122 mm) |
| Waterproofing | 1 m, 30 min (IPX7) |
| Image stabilization | Yes |
| Focus system | Center focus |
| Exit pupil | 2 mm * |
| Twilight factor | 28.3 * |
| Relative brightness | 4 * |
* Calculated from the size, not printed by the maker.
Other sizes of the Techno-Stabi
Fujinon makes the Techno-Stabi in 5 sizes; a larger front lens adds brightness and weight, and more magnification narrows the view.
| Model | Size | Field of view | Eye relief | Close focus | Weight | Exit pupil | Amazon |
|---|---|---|---|---|---|---|---|
| Fujinon Techno-Stabi TS-L 2040 | 20x40 | 178 ft | 15.4 mm | 16.4 ft | 30.1 oz | 2 mm | Check price on Amazon |
| Fujinon Techno-Stabi TS12x28WP | 12x28 | 219 ft | 16.5 mm | 11.5 ft | 17.1 oz | 2.3 mm | Check price on Amazon |
| Fujinon Techno-Stabi TS16x28WP | 16x28 | 210 ft | 16 mm | 11.5 ft | 19.4 oz | 1.8 mm | Check price on Amazon |
| Fujinon Techno-Stabi TS-X 1440 | 14x40 | 210 ft | 13 mm | 16.4 ft | 45.9 oz | 2.9 mm | Check price on Amazon |
| Fujinon Techno-Stabi TS-L 1640 | 16x40 | 219 ft | 15.7 mm | 16.4 ft | 30.2 oz | 2.5 mm | Check price on Amazon |
Fujinon binoculars
Techno-Stabi TS-L 2040 questions
Techno-Stabi TS-L 2040: does it work with glasses?
Techno-Stabi TS-L 2040 has 15.4 mm of eye relief, under the 16 mm the RSPB advises for people who wear glasses, so the edge of the view may be cut off with glasses on.
Techno-Stabi TS-L 2040: what does 20x40 mean?
Techno-Stabi TS-L 2040 magnifies 20 times through 40 mm front lenses, which works out to an exit pupil of 2 mm, the width of the beam of light that reaches each eye.