Nikon 7294 Monarch ATB 8x42 Binocular

by Nikon

• Waterproof/Fogproof
• Dielectric High-Reflective Multilayer Prism Coating
• Fully Multicoated lenses & Phase-Correction Coated Prisms
• Multi-Setting Click Stop Eyecups

Product Details

How to Choose the Right Binocular [3.54 MB PDF]

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Nikon No-Fault Repair/Replacement Policy for Binoculars, Spotting Scopes, Fieldscopes [493 KB PDF]

• Item Weight: 1.5 pounds
• Shipping Weight: 2.2 pounds
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B0033PRQB0
• Item model number: 7294
• Average Customer Review: 4.6 out of 5 stars  See all reviews (117 customer reviews)
• Amazon Best Sellers Rank: #3,069 in Camera & Photo (See Top 100 in Camera & Photo)
• Date first available at Amazon.com: January 18, 2010

Product Description

Size: 8x42 | Color: Black

From the Manufacturer

The Monarch ATB 42mm with Dielectric High-Reflective Multilayer Prism Coating binocular features brighter, sharper colors, crisp and drastically improved low-light performance. A new body style provides unparalleled strength and ruggedness in a package that is comfortable to carry all day. With rugged rubber armor for added durability and a firm grip even in the worst conditions, Nikon guarantees every ATB to be 100% waterproof and fogproof, each is backed by Nikon's 25 Year Limited Warranty and No-Fault Repair/Replacement Policy. The new Monarch ATB 42mm with Dielectric High-Reflective Multilayer Prism Coating binocular is available in 8x42, 10x42 and 12x42. It is also available in Team REALTREE models with the REALTREE APG HD camouflage pattern.

Technical Specs

• Focusing System – Center Focus
• Magnification – 8x
• Objective Diameter – 42mm
• Angular FOV – Real – 6.3°
• Angular FOV – Apparent – 47.5°
• FOV @ 1000 yds – 330 ft
  
• Close Focus Distance – 8.2 ft
  
• Exit Pupil – 5.3mm
• Relative Brightness – 28.1
  
• Eye Relief – 19.6
  
• Size (L&W) – 5.7 x 5.1
• Weight – 21.5
• Waterproof/Fogproof – Yes
• Prism coating – Dielectric
  

Model	Focusing System	Magnification	Objective Diameter	Angular FOV Real	FOV @ 1,000 Yards	Close Focus Distance	Exit Pupil	Relative Brightness	Eye Relief	Size (L&W)	Weight	Waterproof	Prism Coating
7294 & 7297	CF	8	42	6.3	330	8.2	5.3	28.1	19.6	5.7x5.1	21.5	Y	Dielectric
7295 & 7298		10		5.5	288		4.2	17.6	18.4
7296 & 7299		12		5	262		3.5	12.3	15.4

Dielectric High-Reflective Coating – This technique provides almost the same brightness as that perceived by the naked eye

Multi-Setting Click Stop Eyecups – provides fast, effective eye relief

Fully Multicoated Lenses

Rugged Rubber Armor for Added Durability

Warranty Information

Nikon is dedicated to quality, performance and total customer satisfaction. If your Nikon binocular, Spotting Scope or Fieldscope requires service or repair not covered by our 25 Year Limited Warranty, Nikon will repair or replace it (even it was your fault) for just $10, plus return shipping and handling.
Excludes – StabilEyes, Laser Rangefinders and Spotting Scope/Fieldscope eyepieces.

FAQ's

Real field of view
Real field of view is the angle of the visible field, seen without moving the binoculars, measured from the central point of the objective lens. The larger the value is, the wider the viewfield available. For example, binoculars with a wider field of view are advantageous for locating fast-moving wild birds within the viewfield. This also applies for finding small nebulas or a cluster of stars in astronomical observations.

Apparent field of view
Apparent field of view is the angle of the magnified field when you look through binoculars.
The larger the apparent field of view is, the wider the field of view you can see even at high magnifications.

With the conventional method used previously, the apparent field of view was calculated by multiplying the real field of view by the binocular magnification. (With this formula, apparent field of view wider than 65˚ is called wide field of view.)

After revision, Nikon's figures are now based on the ISO 14132-1:2002 standard, and obtained by the following formula:

tan ω' = τ x tan ω
Apparent field of view: 2ω'
Real field of view: 2ω
Magnification: τ
(With this formula, apparent field of view wider than 60° is called wide field of view.)

For example, the apparent field of view of 8x binoculars with an 7.0°real field of view is as follows:
2ω' = 2 x tan^-1 (r x tan ω)

= 2 x tan^-1 (8 x tan 3.5)
= 52.1°

Relative Brightness
Relative brightness value is obtained by squaring the diameter of the exit pupil. The greater the relative brightness is, the brighter the image will be. With 8x42 binoculars, the brightness is (42÷8)2= 28.1. This means that if the magnification is the same, the larger the effective diameter of the objective lens, the brighter the image will be.

Do binoculars with the same exit pupil offer the same brightness?

No. Brightness may vary even if the exit pupil is the same. This is because the amount of light reaching the viewer's eyes varies according to the number of lens elements and quality of lens/prism coatings. Superior optical design and highquality coating greatly contribute to the brightness of binoculars. Brightness values specified in product brochures, etc. are theoretical ones calculated in the design process. Please note these factors when comparing actual brightness values.

Prism Coatings
Multilayer coating is also applied to prisms to raise transmittance. A roof prism system has one surface that does not feature total internal reflection, so vapor deposition with metals, etc. must be used to raise the reflectivity of this surface. Also, phase-correction coating on roof surface ensures high-contrast images.
*Binoculars' brightness and contrast are affected by not only prism coatings, but also the number of objective lens and eyepiece lens, and types of coatings.

Metal-vaporized, high-reflectivity prism coating Using vacuum-vaporization technology, metallic material such as aluminum or silver is applied to the reverse side of a prism surface that is not totally reflective. This raises the reflectivity of the prism mirror surface. Dielectric high-reflective multilayer prism coating This coating features reflectance that exceeds 99%. By utilizing light interference, this coating assures high reflectivity across the full visible range, and ensures high color reproducibility.

Reflectance characteristics of prism coatings on mirror surface The horizontal axis indicates the wavelength of light. The vertical axis indicates the reflectance of light. Binoculars' brightness is determined not only by the reflective mirror, but also by the total optical system such as the number of lenses and quality of coatings.

Phase-correction coating
A roof (Dach) surface can cause phase shift of light that affects image resolution. This phenomenon is caused by phase differences arising from total light reflection on a roof (Dach) surface and it can occur with even a perfectly processed prism. Phase-correction coating is applied to the surface to minimize loss of resolution, ensuring high-contrast images.

Twilight Factor
The factor that has the greatest impact on resolution or image detail, will be dependent upon the amount of light available during the time of observation. During daylight hours, when your eye pupil size will be only about 2 to 3mm, magnification will be the principal factor in image resolution. At night, with the eye pupil dilated to 6 to 8mm, aperture size is the controlling factor. In twilight conditions both of these factors control resolution effectiveness and the twilight factor is the term that compares binocular performance under these conditions.

The twilight factor is calculated by taking the square root of the product of the magnification and the aperture. The higher the twilight factor, the better the resolution of the binocular when observing under dim light conditions. For example, a 10 X 40 (twilight factor 20) would effectively resolve better under these conditions than a 7 X 35 (twilight factor 15.4) even though the 10 X 40 has a smaller exit pupil. Remember, however, that the twilight factor does not take into account the transmittance or quality of the optical system.

Product Description

A roof prism binocular with a hearty feature-set that's easy on the wallet and the environment? Yes! - the Monarch ATB 8x42 from Nikon is here - it's layered with assets, and it won't break the bank when you bring one home.

Nikon's proprietary lead and arsenic free optical-glass formula, known as Eco-Glass, is used for all lenses and prisms in this fine Monarch binocular. All of the air-to-glass surfaces are fully multicoated to ensure maximum light transmission, sharpness, and contrast. The roof prisms are finished with a dielectric coating that enhances the efficiency of the optical system to near perfection. This easy-to-handle optic is fully waterproof and fogproof, and a tactile rubberized exterior ensures a secure grip at all times. The centered focus knob is fast, accurate, and easy to use. A pair of multi-setting click-stop eyecups and a notable 15.5 mm of eye relief allow you to tailor the binocular to suit your needs - whether you're wearing glasses or not. Sleek lightweight form factor - excellent ergonomics, easy to carry, durable Center focus knob - fast full-range of focus for quick viewing. Click stop eyecups - clear comfortable view with/without sun/eyeglasses Specifications Prism Type - Roof Magnification - 8x Objective Lens Diameter - 42 mm Angle of View - 6.3 Field-of-View - 330' @ 1000 yd / 110 m @ 1000 m Minimum Focus Distance - 8.2' / 2.5 m Exit Pupil Diameter - 5.3 mm Eye Relief - 19.6 mm Interpupillary Adjustment - 56 - 72mm / 2.2 - 2.83 Focus Type - Center Weatherproofing - Water and fogproof Dimensions (WxHxD) - 5 x 2.4 x 5.7 / 127 x 60.96 x 144.78mm Weight - 21.5 oz / 609.53g

Most Helpful Customer Reviews

726 of 734 people found the following review helpful

5.0 out of 5 stars 8x vs 10x vs 12x February 25, 2011

By Thomas P. Mcfarland

Color Name:Black|Size Name:8x42

I've written a review about the last iteration of these binoculars and I won't repeat it here. Briefly, these are the best binoculars you can get without spending big bucks, and I think they are the cheapest binoculars you should even consider buying (while there might be an exception to this, cheaper binoculars are bad enough to be worthless and a complete waste of money). These binoculars are three times as good as what you can get for $100 and 90% as good as what you can get for $2,000. They are better than most similarly priced binoculars, and better than many much more expensive binoculars.

Since this is one of the most common binoculars bought by beginners (for good reason), I thought it would be helpful to have a breakdown of the uses of the different magnifications as many buyers have probably not used binoculars extensively. I am mostly into birding and wildlife watching, so beware of that bias if your needs are different.

Don't know what size binoculars to get? Probably just get the biggest ones you can afford, I mean, more magnification is better because you see more, right? Not really. There are a number of trade-offs associated with high magnification. This will help you decide what size is best for you (hint, if you are reading this, 8x42 is almost certainly the best choice for you).

Binoculars have two numbers such as 8x42 or 10x50. The first number refers to magnification, typically 8 or 10, but others also exist (6, 7, 12...). The second number refers to the size of the objective lens (that is the big piece of glass farther from your eye) which in turn determines light gathering potential. These nikon monarchs are offered in 8x42, 10x42, and 12x42 sizes. I don't know that I've ever seen 12x binoculars, but 8x and 10x binoculars with the same objective lens (42mm in this case) will be nearly identical in size (and, counterintuitively, the 10x will often be very slightly smaller). The higher the magnification, the more light you need, so a 10x binocular will need a larger objective lens than an 8x binocular to have similar brightness.

First major consideration: trade-off of magnification vs. brightness. Higher magnification means things appear closer, but higher magnification also means less brightness. Brightness is very important to see markings and to have a pleasant image to look at (try watching a movie with the monitor brightness turned way down, not as much fun, is it?) Obviously you can counter this trade-off with larger objective lenses, but that gets expensive and heavy.

Second major consideration is shake. 10x binoculars are hard to hold steady (and I am young and not particularly shaky). If you are leaning against a tree with a low heart rate, no problem, if you just ran up a hill to see something, much harder. As you up the magnification you also increase the problem of shakiness. If you can't hold the binoculars steady, your eyes can't focus on what is in them. This one is really, really, really important. If you haven't used binoculars much before, you probably don't realize how much of a problem hand shake can be. 8x is pretty easy to hold steady. 10x isn't so bad. 12x is more or less out of the question without a very steady support.

Third major consideration: Field of view/ease of finding things in your binoculars. Try this: take your digital camera, put it to full zoom and try to aim at a distant object that takes up much of the screen. Kind of hard, isn't it? Now zoom out all the way and try to find that same object. Much easier. Binoculars are very similar, the larger the magnification, the more zoom you are working with, the the more difficulty you will have getting an object in sight. This is particularly true with moving objects. Lower magnifications make it easier to scan because the give you more peripheral vision.

Fourth (somewhat less major) consideration: depth of field. This is the range of distance from you that is in focus without moving the focus wheel. Larger depths of field are better. Smaller magnifications tend to have wider depth of field. Wider depth of field is more pleasant to look at and makes finding things easier. Mostly a wide depth of field just looks a lot nicer.

So, what size to get? Of the available sizes: 8x42, 10x42, and 12x42. 8x42 is definitely the most versatile. 8x magnification is quite a lot, but shake isn't too bad, depth of field is pretty good, field of view ("peripheral vision") is pretty good. These are ideal for watching moving birds as they are easy to track with. I prefer 8x binoculars and most of what it comes down to for me is that the image that comes through them is much more pleasant to look at: brighter, crisper, more depth of field. Learning to aim your binoculars at something takes practice, and 8x will definitely be easier to learn with. 8x really shines in lower light conditions, in tracking fast moving birds, and whenever your hands might be shaking a bit (which is pretty much always). While 8x is definitely the choice for a beginner, it does not mean that it is only for beginners and many, probably most experienced birders use 8x as their primary binocular.

10x can definitely help show some markings on birds. For still and slow birds in good light, or when it is easy to track birds (think hawks) 10x can be an excellent choice. They are a little bit less versatile, they are a little bit harder to use, require a bit more technique and steadiness. Still a really good choice for birding. 10x make IDing birds a bit easier (in good light and with good technique) but the overall image is a bit less pleasant to look at, and that is really important to me, less so to other people. 10x is a very popular choice among birders (probably slightly less popular than 8x, but not by much). If you are interested in watching how birds behave, get 8x, if you really want to see those faint markings to make a positive ID, 10x may work better for you.

12x is not for birding. I've heard of some birders using them in some situations, but I have yet to actually meet one. 12x is better suited for astronomy or looking at targets or any time you know you can be sitting still and resting your binoculars on a large static object. 12x is a very specialized tool, it should not be the only pair of binoculars you own.

I hope this helps.

116 of 119 people found the following review helpful

5.0 out of 5 stars Monarch 8x42 Binocular June 18, 2010

By M. D. Nichols

Color Name:Black|Size Name:8x42

I purchased these based on the performance review from Cornell. I am thouroughly pleased and actually purchased a second pair for my wife.

The low light performance of these was more than adequate for our birding needs in early morning or late evening. The brightness is astonishing compared to a binocular of lesser quality. I will never go back to cheap binos. These have helped tremendously bringing our birding experience to the next level. They offer a superb level of contrast and sharpness required for bird identification. I can easily see markings on a sparrow at 50 feet or more in low light. The eye relief is great and having retractable eyecups, even works well with eyeglasses. These binos are meant to be used heavily, just about bulletproof in most conditions.

I would advise people to change out the neckstrap with a harness. My neck never hurts and they don't swing with a harness. The Leupold harness is fantastic. If you are a birder and want to make a good experience and great one, pull the trigger on these. I really think you will be pleased.

As for the 8 x 42 or 10 x 42 debate... If you need low light performance and are watching moving targets such as small birds or the like, I feel the 8 x 42's are the way to go. If you have bright conditions,very steady hands and a still target the 10 x 42 is worth looking at. Try out a pair of each magnification at your local sporting goods store if possible and you decide.

98 of 100 people found the following review helpful

5.0 out of 5 stars Great birding and bugging bins April 22, 2010

By Andrew Thornton

Color Name:Black| Size Name:10x42|Amazon Verified Purchase

These binoculars are mostly just like the old Nikon Monarchs, with maybe just a little more light in low light conditions. An excellent pair of binoculars for the price, five years ago binoculars of this quality would have been more like $500-600. An especially cool feature of all the Nikon Monarchs is the close focus distance, which with my eyes is probably even a little under four feet. If you like looking at butterflies and dragonflies as well as birds, these binoculars are an excellent choice for their price tag.