Steiner M1580 specs and field of view
At 15x with an 80 mm objective, the M1580 has a calculated twilight factor of 34.6 and a calculated exit pupil of 5.3 mm, and it takes a tripod.
- Field of view
- 216 ftat 1,000 yd
- Eye relief
- 13 mm
- Close focus
- 197 ft
- Weight
- 68.1 oz
- Exit pupil
- 5.3 mmcalculated
Why pick it
- Waterproof
- Takes a tripod adapter
Who the M1580 suits
It suits fixed, tripod-mounted watching of distant subjects at dusk, with a 216 ft field of view. The price band is over $2,000.
Weight of 68.1 oz, 13 mm of eye relief and 197 ft close focus make it a heavy, tripod-bound tool.
M1580 can be set against the most popular models of every size in the best binoculars list. Steiner lists it in the over $2,000 price band, alongside the models in best binoculars over $1,000.
M1580 specifications
M1580 figures as Steiner prints them; rows marked * are calculated from the 15x80 size.
| Magnification | 15x |
|---|---|
| Objective lens | 80 mm |
| Field of view | 216 ft at 1,000 yd (72 m at 1,000 m) |
| Angular field of view | 4.1° |
| Apparent field of view | 62° * |
| Eye relief | 13 mm |
| Close focus | 197 ft (60 m) |
| Eye spacing range | 56 to 74 mm |
| Weight | 68.1 oz (1,931 g) |
| Waterproofing | Submersion to 16ft. |
| Fog-proofing gas | Nitrogen |
| Tripod adaptable | Yes |
| Maker list price | over $2,000 |
| Exit pupil | 5.3 mm * |
| Twilight factor | 34.6 * |
| Relative brightness | 28.4 * |
* Calculated from the size, not printed by the maker.
Other sizes of the M-Series
Steiner makes the M-Series in 7 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 |
|---|---|---|---|---|---|---|
| Steiner M1580 | 15x80 | 216 ft | 13 mm | 197 ft | 68.1 oz | 5.3 mm |
| Steiner M830r | 8x30 | 390 ft | 20 mm | 66 ft | 18.7 oz | 3.8 mm |
| Steiner M750r | 7x50 | 390 ft | 22 mm | 66 ft | 36.9 oz | 7.1 mm |
| Steiner M750rc | 7x50 | 392 ft | 22 mm | 66 ft | 39.7 oz | 7.1 mm |
| Steiner M1050r | 10x50 | 300 ft | 15.8 mm | 66 ft | 35.3 oz | 5 mm |
| Steiner M1580rc | 15x80 | 216 ft | 13 mm | 197 ft | 5.3 mm | |
| Steiner M2080 | 20x80 | 160 ft | 197 ft | 68.1 oz | 4 mm |
Steiner binoculars
M1580 questions
M1580: does it work with glasses?
M1580 has 13 mm of eye relief, well short of the 16 mm the RSPB advises for people who wear glasses.
M1580: what does 15x80 mean?
M1580 magnifies 15 times through 80 mm front lenses, which works out to an exit pupil of 5.3 mm, the width of the beam of light that reaches each eye.
M1580: can it go on a tripod?
M1580 is tripod adaptable according to Steiner, so it accepts a binocular tripod adapter.