Steiner Commander 7x50 vs Fujinon Polaris 7x50 FMTR-SX
Quick take: The Steiner Commander 7x50 costs $320 less; the Fujinon Polaris 7x50 FMTR-SX has a wider field of view (383 vs 357 ft @ 1000 yds).
Field of view, to scale
Top-down view · drawn to true scale — no exaggeration
Which one to buy
The Steiner Commander 7x50 is discontinued, so it may be hard to find new, and that changes how you read the $320 gap between it and the Fujinon Polaris 7x50 FMTR-SX. Both are 7x50 marine porros with exit pupils around 7.1mm, both are nitrogen purged and waterproof, and owners of both rarely touch the focus once it is set. What differs is what each is built around.
Commander owners talk most about navigation. They describe an illuminated compass with a rangefinding reticle they reach for all the time when taking bearings, Steiner's sports-auto-focus that keeps everything from about 20 yards out sharp, a buoyant strap, and a repair program they call fair. It is also the lighter binocular, at 38.4 oz against 48.2 oz. The costs are a polycarbonate body that feels less premium to some, and a fixed-focus design that can't handle close wildlife.
Fujinon owners talk about the image. They cite lab-measured light transmission of 97.9%, sharpness out to 93% of the field radius, a wider 383 ft field against 357 ft, and 23mm of eye relief against 20.2mm, plus a heavy aluminum body that has lasted decades for some owners. The trade-offs are weight that tires your arms, astigmatism in the outer 10% of the field, some flare from bright sources near the edge, and no compass on this version.
For a sailor who takes bearings, the Commander's compass is the deciding feature, provided you can still find one in stock. Everyone else, and especially anyone who also uses a 7x50 for astronomy or wears glasses, gets the better optical instrument in the Fujinon.
Steiner Commander 7x50
For sailors who navigate by bearings and want auto-focus in a lighter body, if a new one can still be found; it is discontinued.
Fujinon Polaris 7x50 FMTR-SX
For the best 7x50 image, including astronomy and glasses-friendly viewing, as long as 48.2 oz aboard is acceptable.
| Spec | Steiner Commander 7x50 | Fujinon Polaris 7x50 FMTR-SX |
|---|---|---|
| Approx. price | ~$530 | ~$850 |
| Use case | Marine | Marine |
| Magnification | 7x | 7x |
| Objective | 50mm | 50mm |
| Exit pupil | 7.14mm | 7.1mm |
| Field of view | 357 ft @ 1000 yds | 383 ft @ 1000 yds |
| Eye relief | 20.2mm | 23mm |
| Close focus | 66 ft | 29 ft |
| Prism | Porro | Porro |
| Glass | Standard | BaK-4 |
| Coating | Fully Multi-Coated | Fully Multi-Coated |
| Weight | 38.4 oz | 48.2 oz |
| Dimensions | 7.8 x 5.5 in | 8.5 x 7.8 in |
| Warranty | Lifetime | 10-Year Limited |
Feature comparison
Steiner Commander 7x50
- ✗ED Glass
- ✗Phase-Corrected
- ✗Dielectric Coating
- ✓Waterproof
- ✓Fogproof
- ✗Image Stabilized
- ✗Tripod Adaptable
- ✗Magnesium Body
- ✓Locking Diopter
Fujinon Polaris 7x50 FMTR-SX
- ✗ED Glass
- ✗Phase-Corrected
- ✗Dielectric Coating
- ✓Waterproof
- ✓Fogproof
- ✗Image Stabilized
- ✓Tripod Adaptable
- ✗Magnesium Body
- ✗Locking Diopter
What birders say
Steiner Commander 7x50
- ✓Integrated illuminated compass with rangefinding reticle that sailors genuinely use - owners report reaching for it 'all the time' for taking bearings on marks, ships, and lights
- ✓Huge 7.1mm exit pupil makes it a low-light monster - one owner notes 9 out of 10 uses are at night, exactly what a watch-keeping binocular is for
- ✓Sports-auto-focus system: set each eyepiece once for your eyes and everything from about 20 yards to infinity stays sharp - no fumbling with a focus wheel on a pitching deck
- ✓Extra-wide field of view for easy orientation and quick reacquisition of targets from a moving boat
- ✓Bright, razor-sharp German optics that long-term owners describe as the reference standard for marine glass
- ✓Built for abuse at sea: pressurized nitrogen fill, deeply cushioned NBR rubber armor, and waterproofing rated for full submersion
- ✓Buoyant high-visibility neck strap included, so an overboard drop doesn't mean a lost binocular
- ✓Steiner's decades-long warranty coverage plus a repair program owners on forums describe as reasonably priced and reliable
- ✗Individual-focus design is wrong for wildlife and general nature use - anything closer than about 20 yards can't be brought into sharp focus, as birding forum users point out
- ✗Premium price - comparably specced Fujinon 7x50 models with compass and reticle undercut it, and a respected marine-binocular test picked the Fujinon as its favorite
- ✗Heavy at 38.4 ounces, which you feel during a long watch without the strap properly rigged
- ✗Bulky 7x50 format is overkill for daytime-only coastal use where a compact would do
- ✗Polycarbonate (Makrolon) chassis, though proven at sea, feels less premium to some than the metal bodies on rival glass
- ✗Compass models are balanced for a specific hemisphere zone, a detail circumnavigators need to check before buying
- ✗No image stabilization, which boating forum threads increasingly weigh against stabilized alternatives at similar money
- ✗The compass and reticle add weight and clutter that non-navigators will never use
Fujinon Polaris 7x50 FMTR-SX
- ✓Astonishing measured light transmission — independent lab testing recorded 97.9%, and reviewers describe 'supreme daytime brightness' that outperforms even modern premium 8x42s
- ✓Sharp nearly edge to edge with imperceptible distortion — lab tests found blur onset only at 93% of field radius, exceptional for any binocular, let alone a porro at this price
- ✓True mil-spec build: heavy aluminum body, thick rubber armor, nitrogen purge, internal desiccant, fully waterproof — the reference marine binocular for professional captains and serious sailors
- ✓Huge 7.1mm exit pupil and 7x magnification make a bright, steady view from a rocking deck and use a fully dark-adapted eye for astronomy
- ✓23mm eye relief is among the most generous anywhere — eyeglass and sunglass wearers see the whole field
- ✓Massive depth of field (roughly 10m to infinity) means almost no refocusing — ideal on the water and for tracking birds
- ✓Legendary longevity: astronomy-forum owners report examples bought in the early 1990s still delighting them — one recent thread is literally titled 'Wow!'
- ✓Named a best high-end marine binocular by review sites and backed by a limited lifetime warranty; lab reviewers recommended it 'wholeheartedly' as one of the best values on the market
- ✗Heavy — roughly 1.4-1.6kg (over 3 lbs), tiring to handhold for long sessions and a serious neck-strap load
- ✗Individual eyepiece focusing: perfect for marine and astronomy use, but slow and awkward for terrestrial subjects at changing distances — this is not a birding binocular
- ✗Close focus is a distant 4.3-5m minimum — anything nearby is simply out of reach
- ✗Despite the 'field flattener' branding, testers found astigmatism in the outer 10% of the field and some edge distortion
- ✗Chromatic aberration is low centrally but rises to medium at the field edges
- ✗Stray light and flare can intrude when a bright source sits near the field edge
- ✗Lab testing noted slightly truncated exit pupils — a minor blemish on an otherwise superb optical system
- ✗Big and bulky to pack; the 7x50 porro format is the opposite of travel-friendly
Steiner Commander 7x50 vs Fujinon Polaris 7x50 FMTR-SX: common questions
Is the Fujinon Polaris 7x50 FMTR-SX worth $320 more than the Steiner Commander 7x50?▾
For image quality, owners say yes, citing lab-measured transmission of 97.9% and sharpness nearly to the edge. The Commander answers with a compass, a lighter 38.4 oz body and auto-focus, but it is discontinued, so the real comparison may be against whatever stock remains.
Which is better for astronomy, the Steiner Commander 7x50 or the Fujinon FMTR-SX?▾
The Fujinon. Owners call it a genuine astronomy classic, with a 7.1mm exit pupil, very high transmission and near edge-to-edge sharpness, though its weight pushes most people to a tripod or monopod for long sessions. Commander owners focus almost entirely on marine use and navigation.
Does the Fujinon Polaris 7x50 FMTR-SX have a compass like the Steiner Commander 7x50?▾
No. Fujinon owners say the compass comes on the FMTRC-SX sibling at a higher price. Commander owners describe its illuminated compass and rangefinding reticle as the feature they would never give up.