Fujinon 10x70 MT-SX Poseidon Binocular

Fujinon 10x70 MT-SX Poseidon Binocular

Fujinon 10x70 MT-SX Poseidon Binocular

B&H # FU10X70MTSX MFR # 7110701
More on the Way
Expected availability: 7-14 business days

Product Highlights

  • Traditional Porro Prism
  • Fujinon EBC Fully Multi-Coated Optics
  • Nitrogen Filled, Water & Fogproof
  • Individual Focusing Eyepieces
  • Tripod Mountable with Optional Adapters
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Fujinon 7110701 overview

  • 1Description

A great unit for both astronomical and long-range terrestrial use, the mil-spec Fujinon 10x70 MT-SX Poseidon Binocular transmits 95% of the light reaching the binocular and has Fujinon's EBC multi-coatings on every optical surface. Its long eye relief makes it easy to use for long periods of time, while the impressive 7mm exit pupil ensures complete coverage when pupils are fully dilated in low or challenging light, such as at night while stargazing or at dawn and dusk, without vignetting. Individually focusing eyepieces ensure tack-sharp views by any user. The 100% fog and waterproof Poseidon withstands drastic temperature and humidity changes with ease.

A great optic for wide-field astronomy, comet hunting, and watching meteor showers thanks to its large objective, high magnification, wide exit pupil, and generous eye relief
Individually focusing eyepieces enable precision tack-sharp focus for any user
Nitrogen filled for water and fogproof performance
Fujinon EBC multi-coatings on all optical surfaces improve light transmission, color rendition, sharpness, and contrast
Wide 56-74mm interpupillary adjustment range
Pebbled external finish on a metal housing
Accepts optional polarizing, nebula, haze, and neutral density eyepiece filters
Fold-down-style rubber eyecups for comfortable use with or without eyewear
Accepts 1/4"-20 binocular tripod adapters for hands-free use to reduce fatigue and hand shake during observation sessions
UPC: 631267107012
In the Box
Fujinon 10x70 MT-SX Poseidon Binocular
  • Strap
  • Tethered Objective Lenscaps
  • Eyepiece Rainguard
  • Cleaning Cloth
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    Fujinon 7110701 specs

    Prism Type Porro
    Magnification 10  x
    Objective Lens Diameter 70 mm
    Angle of View 5.3° (Actual)
    Field of View 278.2' @ 1000 yd / 92.7 m @ 1000 m
    Exit Pupil Diameter 7 mm
    Eye Relief 12.0 mm
    Interpupillary Adjustment 56.0 to 74.0 mm / 2.2 to 2.9"
    Focus Type Individual
    Tripod Mount Yes (Adapter Optional)
    Dimensions 10.6 x 9.4" / 26.9 x 23.8 cm
    Weight 3.97 lb / 1.8 kg
    Packaging Infofecvueqrtfyruucrwwfsrzaqauqdyrd
    Package Weight 7.35 lb
    Box Dimensions (LxWxH) 12.0 x 10.0 x 5.5"

    Fujinon 7110701 reviews

    10x70 MT-SX Poseidon Binocular is rated 4.5 out of 5 by 2.
    Rated 4 out of 5 by from Almost as nice as the FMT units, at half the price (US) I noticed that B&H had the 10x70 Poseidon MT-SXs for less than the Japan retail price, and just over half the price B&H charges for the 10x70 Polaris FMT-SXs, so I decided to order a pair. These are very much like the FMTs in build - solid American-style housings (one-piece rather than two as is the German style), waterproof, same EBC multi-coatings as the fancier units, and a little lighter (almost hand-holdable). Where they fall a little short, however, is off axis with a dilated pupil (i.e., in night time astronomical use). Starting about 80% off axis, field curvature is apparent (the outer 20% is soft when the center 80% is focused; you can refocus on the edge, but then the center gets a little soft), though less severe than with many other binoculars, including the 70mm Nikon Astroluxes. There's also a little coma in the outer 5% with stars taking on tiny radial seagull shapes right at the field stop. Eye relief is a little tight and the eye lens diameter is modest. The FMT's in contrast, have much larger oculars, with larger eye lenses and a more eye relief (in 10x70 guise). The biggest advantage of the FMTs, of course is in the F which designated the flat-field, widefield oculars. Now the good. Price is outstanding. Build is high quality both mechanically and fit and finish. Though not quite perfect off axis like the FMTs, these are still as good or better than other competitive models that also lack field flattening elements. On axis they are sharp and at night, super-bright. M13 in Hercules was enormous even at 10x relative to the two field stars framing it. This is under light polluted suburban skies. I imagine they will be even brighter and go even deeper under dark skies with a fully dilated pupil. My understanding, though, is that Fujinon has discontinued these, so I suspect what's available is limited to stock on hand in the distribution and retail channel, here and in Japan. Hard to beat at the B&H price.
    Date published: 2017-05-21
    Rated 5 out of 5 by from Awesome Astronomy Binoculars at a Reasonable Price These are an excellent pair of binoculars for astronomy. I can hand hold them steady and they gather a lot of light. The other night I was looking at Ptolemy's cluster and it was like diamonds on black velvet.
    Date published: 2017-08-14
    • y_2018, m_11, d_15, h_17
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