8X42mm Elite ED roof prism

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Buy this binocular before 12/31/2012, and we'll include a form you can send in to Bushnell that will get you a $75 rebate check to spend however you like.

This new Bushnell Elite ED 8 x 42mm binocular is the latest and most advanced version of Bushnell’s top-of-the-line Elite series. It comes from Bushnell, a company with a proud history of optical innovation and performance that stretches back over 60 years. And you don't stay in business for 60 years, growing constantly, unless you are doing something very right.

This new Elite ED version gets an upgrade this year in the form of ED Prime glass lenses for even finer color correction, and new “RainGuard HD” coatings that shed water from the optics even faster than Bushnell’s original industry-first “RainGuard” coatings. It has the right balance of superb true-color performance, excellent light-gathering, and easily hand-holdable magnification to make it your favorite all-purpose binocular, just as it is one of ours.

Features of this binocular . . .

  • Multicoated ED Prime aspheric roof prism optics: The Elite ED uses lens elements of ED Prime (Extra-low Dispersion) glass for the most realistic true-color images ever in an Elite binocular. The low dispersion of the ED Prime glass simultaneously reduces annoying chromatic aberration (color-fringing) to vanishingly low levels as it improves color fidelity. All air to glass optical surfaces are fully multicoated, using special high transmission XTR Technology coating materials for the least amount of light loss per optical surface and the brightest possible images. Overall light throughput (the amount of light collected by the binocular that actually reaches your eye) is a full 90%, the highest in its class. The superior color fidelity of the XTR multicoatings and ED Prime glass makes it easier to resolve subtle species differences, even in poor lighting conditions. In addition, the Elite ED uses advanced Hybrid-Fusion Technology to fuse synthetic molded aspheric elements to optical glass substrates. This results in lenses with complex aspheric curves that deliver superior edge-to-edge definition – lenses that would be impossible to produce with conventional lens polishing techniques.
  • Dielectric roof prism coatings: The Elite ED’s roof prisms are precisely fabricated from premium-quality high transmission BaK-4 glass. Instead or aluminum or silver coatings on the prism faces, they use 60-layer XTR dielectric mirror coatings for an astonishing 99.73% reflectivity across the entire visible spectrum, the highest reflectivity in the industry.
  • Phase coated prisms: Special PC-3 phase-correcting coatings are applied to the roof prisms for peak contrast, color fidelity, and resolution. The resulting improvement is easily visible in the color fidelity and detail seen when examining the shadowed areas of a silhouetted or backlit bird.
  • Water-shedding “RainGuard HD” lens coatings: All external optical surfaces (eyepieces and objective lenses) are treated with the latest permanent “RainGuard HD” coatings. These special hydrophobic (water-repelling) coatings are so smooth, even at the molecular level, that water can find virtually no grip on the lens surfaces. This causes the condensation from rain, fog, snow, or your own breath to form in much smaller droplets than on standard optical coatings. Smaller droplets scatter less light, resulting in higher light transmission and a clearer image in poor weather conditions. Bushnell was the first to introduce the “RainGuard” hydrophobic coating advantage to the binocular industry back in 2001. That was six to seven years before other optics manufacturers jumped on the water-shedding bandwagon. Now Bushnell takes another step forward with improved “RainGuard HD” coatings that shed water even faster than those original ground-breaking “RainGuard” coatings.
  • Long eye relief: Eye relief is specified at 19.5mm. Unlike many manufacturers, whose eye relief typically measures a mm or two less than specified due to the recessing of the eyepieces when the eyecups are in the down position for eyeglass use, the Bushnell Elite ED truly provides the full 19.5mm eye relief specified. Vignetting (if any) will be very minor for eyeglass wearers.
  • Body construction: H-body roof prism with internal center focus. The lightweight and durable magnesium alloy body is clad in a durable black armor to take every kind of rough treatment in stride. The armor also insulates the binocular to keep it comfortable to the touch in all temperatures. It is lightly textured to provide a sure grip in wet weather.
  • Weatherproofing: The Elite ED is O-ring sealed and nitrogen-purged to be totally waterproof, fogproof, and dustproof in all climate extremes – from the cold and mists of Attu, to the warm and dripping humidity of the Costa Rican rain forests, to the drenching salt spray of a pelagic birding trip.
  • Focusing: The extra-large ribbed focus knob can be used with either hand. The knob is easy to turn, even while wearing gloves or mittens. The Elite ED close focuses to 8’, making it eminently useful for close-in woodland birding.
  • Diopter adjustment: There is a centrally-located diopter adjustment that cannot shift accidentally while in use. The diopter adjustment ring pulls back and rotates to adjust the optics to your eyesight, and then snaps forward to lock in the chosen adjustment. A red band shows on the diopter adjustment ring when it is unlocked, giving you a visual confirmation of its status.
  • Eyecups/RainGuard: Twist-up eyecups with soft rubber rims block ambient light for those who don’t wear glasses while observing. The eyecups twist back down into the body to provide extra eye relief for those who must wear glasses or sunglasses while birding. The supplied soft and flexible eyepiece rainguard is easy to remove without disturbing the extended/retracted position of the eyecups.
  • Supplied accessories: The binocular comes with a wide and comfortable soft neck strap. Objective lens covers protect the optics when the binocular is not in use. The molded semi-rigid case is shaped to conform to your hip for more comfort when carrying your binocular at your side with the separate adjustable-length case strap over your shoulder.
  • The new Bushnell 8 x 42mm Elite ED is an outstanding all-around premium binocular that we think compares quite handily with European binoculars that nowadays cost up to three or four times the very reasonable Elite ED price.

    Optical Type:
    The optical design of a binocular or spotting scope. A binocular can be either a porro prism (whose objective lenses are off-set and spaced further apart than the eyepieces) or a roof prism (whose objective lenses are in line with the eyepieces). A spotting scope can be either a porro prism or roof prism refractor or a catadioptric (a combination of lenses, mirrors, and prisms).
    Roof Prism
    Field of view:
    The field of view (FOV) is the amount of observable world one can see at any given moment.
    6.3°
    Field of view 1000 yards:
    330'
    Exit Pupil:
    The circular image or beam of light formed by the eyepiece of a telescope. To take full advantage of a scope's light-gathering capacity, the diameter of an eyepiece exit pupil should be no larger than the 7mm diameter of your eye's dark-adapted pupil, so that all of the light collected by the telescope enters your eye. (The eyepiece exit pupil diameter is found by dividing the eyepiece focal length by the telescope focal ratio.) Your eye's ability to dilate declines with increasing age (to a dark-adapted pupil of about 5mm by age 50 or so). For those in this age group, eyepieces with exit pupils larger than their eyes can dilate to simply waste their telescope's light-gathering capacity, as some of the scope's light will fall on their iris instead of entering their eye.
    5.25 mm
    Relative Brightness:
    A number used to compare the brightness of binoculars or spotting scopes of similar magnification. The relative brightness is determined by squaring the diameter of the exit pupil. The larger the relative brightness number, the brighter the image.
    27.56
    Twilight Factor:
    A number used to compare the effectiveness of binoculars or spotting scopes used in low light. The twilight factor is found by multiplying the size of the objective lens (in mm) by the magnification and then finding the square root of that result. The larger the twilight factor, the more detail you can see in low light. A twilight factor of 17 or better if usually required for reasonable low light use.
    18.33
    Eye Relief:
    Eye relief is the distance from the last surface of the eye lens of an eyepiece to the plane behind the eyepiece where all the light rays of the exit pupil come to a focus and the circular image is formed, sometimes called the “Ramsden Disk.” This is where your eye should be positioned to see the full field of view of the eyepiece. If you must wear glasses because of astigmatism, you’ll usually need at least 15mm of eye relief or longer if you want to see the full field of view with your glasses on.

    A note on our eye relief figures: Quite often, our eye relief figures will differ from those of the manufacturer. This is because we measure the “usable” eye relief, while the manufacturers specify their usually-longer (but technically correct) “designed” eye relief.

    The eye lens of the eyepiece is normally recessed below the rubber eyeguard or rubber rim of the eyepiece to keep the lens from being scratched during use. An eyepiece might have a “designed” eye relief of 15mm (and the eye relief will truly measure 15mm from the eye lens to where the image forms). However, if the eye lens is recessed 3mm below the eye guard, the Ramsden Disk forms only 12mm above the eyepiece body (the 15mm “designed” eye relief, less the 3mm of eye relief made unusable by having the eye lens recessed into the body of the eyepiece). This “usable” eye relief of 12mm (measured from the rolled-down eyeguard – the closest point you can get your eye to the eye lens – to where the image forms) is the eye relief figure we would measure and list in this website.

    Why is it important to list the “usable” eye relief? For those people who don’t wear eyeglasses while observing, a few mm difference between the eye relief they expect from the manufacturer’s literature and the shorter eye relief they actually get in real life doesn’t mean a lot. They can simply move a little closer to the eyepiece to see the full field, and never realize that the eye relief is a little shorter than they expected. However, some people must wear eyeglasses while observing, because of severe astigmatism. These observers can’t move closer to the eyepiece if the eye relief is shorter than expected because their glasses get in the way. For these people, the real life “usable” eye relief is more important than the technically correct but sometimes not fully usable “designed” eye relief. We measure and list the actual usable eye relief so that people in the real world can pick the eyepieces that will work best for them.

    19.5mm
    Interpupillary Distance:
    59-78mm
    Close Focus:
    How close you can get to an object and still see a sharp image of it in your binocular or spotting scope is called the “close” or “near” focus
    8'
    Armored:
    A binocular or spotting scope whose body is clad in rubber or polyurethane armor is said to be armored. Armor can be applied for looks, a better grip, noise-proofing, etc. An armored body does not guarantee that a binocular or spotting scope is waterproof, although most waterproof optics are armored.
    Yes
    Weight:
    The weight of this product.
    25.7 oz.
    Warranty:
    Limited Lifetime
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    • Wide comfort neck strap
    • Semi-rigid carrying case with shoulder strap
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    Bushnell - 8X42mm Elite ED roof prism

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    Bushnell - 8X42mm Elite ED roof prism
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    Our Product #: BU842ED
    Manufacturer Product #: 628042ED
    Price: $479.00
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    Get a $75 rebate from Bushnell through 12/31/12. This Bushnell 8 x 42mm Elite ED is a state-of-the-art premium birding binocular using ED glass, aspheric optics, and more, at a price only one-third to one-fourth that of some premium European binoculars . . .





    . . . our 34th year