Nikon 8.5x56 Monarch ATB Binocular, Black, USA
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Nikon 8.5x56 Monarch ATB, Water Proof Roof Prism Binocular with 6.2 Degree Angle of View, Rubber-Armored Black Finish, U.S.A.

SKU: NK8556RP

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Shopper : Is the increased stereoscopic effect of a porro prism binocular, because of the wider span between objectives than that of a roof prism binocular, an advantage to viewing, or is it a distraction? Also, is the light transmission of a porro prism design (simpler than a roof prism design) superior or roughly equivalent, to that of a roof prism binocular?DAVID T : The only true way to determine the difference is to try the two types yourself. Binoculars used porro prisms until the 60s because it is more economical to get good images. Today's binoculars have overcome the technical problems of light transmission, etc. and they are universal on high-end products. Suggest you go on line and read articles such as Birding Binoculars 2: Roof Prisms vs Porros Prisms. The bottom line is still what works best for you.DANIEL M : I think whether it's an advantage or distraction is largely a personal decision. It can definitely be noticeable, a pseudo-3D effect. As far as I understand it, the degree of light transmission is generally higher in a porro prism design, but it can vary greatly. Basically a porro prism bino will deliver a certain brightness at a lower cost than an equivalent roof prism bino, because it takes extra engineering to get the same amount of light through a roof prism design. That's why the very bright roof prism binos cost many thousands of dollars. In addition, more roof prism binos are waterproof than porro prism binos. The Nikon Superior E binos are porro prism, and are the brightest thing I have ever put up to my face. The image is absolutely spectacular, but they are not waterproof and so I ended up not choosing them.BARRY M : Binoculars are like sound systems; there's no real point in breaking them down to technical aspects. Try them out and see what you like best!KENNETH M : I own both roof prism and Porro prism binoculars and, for my needs at least, can't find any difference in their image quality that could be attributed to their respective design. The difference in the image quality of binoculars is more due to the quality of their glass and built. I also own both a Steiner 10x roof prism binocular and a Leica 10x roof prism binocular, both of the same size, and the Leica blows the Steiner easily out of the water regarding image quality. However, the Leica is about 5 times as expensive as is the Steiner so image quality comes with a price. I use my binoculars outdoors and prefer roof prism binoculars over Porro prism binoculars because roof prism binoculars are more compact and lighter but at the same time also more robust than Porro prism binoculars. Today the majority of binoculars is of the roof prism type because roof prism binoculars are easier to manufacture and easier to seal from moisture. If you want to buy a new pair of binoculars you will have more choice with roof prism binoculars than with Porro prism binoculars. I personally would go with a roof prism binocular since, in my experience, the quality of the glass is the decisive factor for image quality but not the design difference between roof prism and Porro prism. I hope this may help.
Shopper : Is 10x power too difficult to hand-hold steady and would 8.5x power be preferable instead? (My purpose is for general use on a farm or other rural area).GATEWAY BROTHER I : I have both and prefer the 8.5 X 56, plus they are a bit clearer and brighter. MARCUS J : I have both 8x and 10x binocular and I use the 8x the most for that reason and the 8x seems to work better in low light situations and in thicker woods. MARK E : You will have difficulty holding a steady image, especially on smaller subjects with 10X, unless resting them on or against a stationary object. The 8.5 with 56mm objective lens is great for all around viewing and will be easier to following subjects in motion with.
Shopper : What is the meaning of "ATB?" Nikon's web site currently advertises Monarchs with the suffix "DCF."MARCUS J : All Terrain BinocularMARK E : The packaging these Binoculars arrived in states "All Terrain Binoculars - ATB"THOMAS B : All-terrain binoculars (ATB)

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Nikon 8.5x56 Monarch ATB Binocular, Black, USA Specifications

  • Type of Prism

    Phase Coated Roof prism

  • Coating

    Multi-Coated Lens

  • Real Angular Field of View

    6.2°

  • Field of View at 1000 Yards

    324'

  • Exit Pupil

    6.6 mm

  • Eye Relief

    19.2 mm

  • Relative Brightness

    43.6

  • Close Focus Distance (ft)

    32.8ft

  • Rubber Coated (Armored)

    Yes

  • Waterproof / Fogproof

    Yes

  • Dimensions

    L x W 7.8" x 5.7"

  • Weight

    ?

  • UPC Code

    018208075171

4 Accessories for Nikon 8.5x56 Monarch ATB, Water Proof Roof Prism Binocular with 6.2 Degree Angle of View, Rubber-Armored Black Finish, U.S.A.

  • All Accessories (4)
  • Adapters & Mounts (1)
  • Straps & Slings (1)
  • Cleaning Accessories (2)
Nikon Car Window Mount
Nikon Car Window Mount
$38.00
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Nikon Binocular Harness
Nikon Binocular Harness
$19.59
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Nikon Lens Pen Cleaning System
Nikon Lens Pen Cleaning System
$7.08
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Nikon Micro Fiber Lens Cleaning Cloth
Nikon Micro Fiber Lens Cleaning Cloth
$4.49
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About Nikon 8.5x56 Monarch ATB Binocular, Black, USA

Nikon's new 56mm objective Monarch ATB that possesses the same features and specifications as its popular 42mm brethren but offers the largest objective lens in Nikon's roof prism binocular line-up.

The objective lens size of the new 56mm Monarch also translates into an exit pupil designed to enhance low light performance. Nikon's 8.5x56 offers an amazing 6.6mm exit pupil and 43.6 relative brightness index

As with the entire Nikon Monarch family, the new 56mm Monarch ATB line is fully waterproof and fogproof and features fully multicoated lenses for maximum light transmission and image quality. The new ATBs incorporate Nikon's exclusive Eco-Glass (made without the use of arsenic or lead) for all lens and prism elements. Prisms feature phase-correction coatings and high reflection mirror coatings for superior sharpness and resolution.

Ergonomic styling, mated with a rubber armored exterior, provides added shock resistance and a firm grip, wet or dry to the 7.8 x 5.7-inch Monarch. Turn and slide rubber eyecups, complemented by long eye relief (19.2mm in the 8.5x56, 17.4mm in the 10x56, 16.3mm in the 12x56), allow the binoculars to be used as comfortably by eyeglass wearers as those with uncorrected vision. A large central focus wheel and adjustable diopter make focus easy to achieve and maintain, even while wearing gloves.

Nikon 8.5x56 Monarch ATB Binocular, Black, USA Features

  • 100% Waterproof/Fogproof/Shockproof
  • Ultra rugged, rubber-armored, roof prism design
  • Phase-correction coated prisms for incredible clarity and brightness
  • Extended eye relief and central focus for viewing convenience
  • Fully Multicoated lenses for bright, clear images
  • Precision aligned optics for extended viewing

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