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Nikon 7247 Action 16x50 EX Extreme All-Terrain Binocular
|Price:||$179.00 & FREE Shipping. Details|
|You Save:||$20.95 (10%)|
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- Waterproof, fogproof, and shockproof performance
- All-metal chassis in lightweight polycarbonate shell
- Rubber-coated body for firm, non-slip grip
- Magnification: 16x
- Objective lens: 50mm
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|Item Dimensions||4.2 x 8.4 x 9.6 inches|
|Item Display Weight||0.9 Kilograms|
|Item Weight||2.29 pounds|
|Objective Lens Diameter||50 mm|
|Shipping Weight||3.75 pounds|
Nikon 16x50 Action Extreme Waterproof Porro Prism Binoculars, Black 7247
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.
|Model ||7x35 ||8x40 ||7x50 ||10x50 ||12x50 ||16x50 |
|Magnification x ||7 ||8 ||7 ||10 ||12 ||16 |
|Objective Diameter||35 ||40 ||50 ||50 ||50 ||50 |
|Angular FOV – Real||9.3 ||8.2 ||6.4 ||6.5 ||5.5 ||3.5 |
|Angular FOV – Apparent||59.3 ||59.7 ||42.7 ||59.2 ||59.9 ||52.1 |
|FOV @ 1000 yds||488 ||430 ||335 ||341 ||288 ||183 |
|Close Focus Distance (ft.) ||16.4 ||16.4 ||23 ||23 ||23 ||23 |
|Exit Pupil (mm) ||5 ||5 ||7.1 ||5 ||4.2 ||3.1 |
|Relative Brightness||25 ||25 ||50.4 ||25 ||17.6 ||9.6 |
|Eye Relief (mm) ||17.3 ||17.2 ||17.1 ||17.2 ||16.1 ||17.8 |
|Size (L&W) (in) ||4.7 x 7.2 ||5.4 x 7.4 ||7 x 7.7 ||7 x 7.7 ||7 x 7.7||7 x 7.7|
|Weight (oz) ||28.2 ||30.2 ||35.3 ||36 ||36.9 ||36.7 |
Additional Action EX Highlights:
- BaK 4 High Index Roof Prisms
- Tripod adaptable
- Long eye relief for eyeglass wearers
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.
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
(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)
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.
Prisms are what let you see a correctly oriented image when you look through a pair of binoculars. There are two types of prisms in common use, Porro prisms and roof prisms.
Roof prisms are essentially in line inside the optical tubes, and make for a more compact set of binoculars. Roof prism binoculars have straight tubes (the front/objective lens is in line with the rear/ocular lens), and are therefore more compact, an important consideration for the sportsman. They usually have two pivot points between the tubes, and are more difficult to adjust to the spacing of your eyes. Roof prisms can give an optical image equal to the best Porro prisms, but for technical reasons they usually do not. To be really good, roof prism binoculars have to be in the high price class. Do not attempt to economize on roof prism binoculars.
Porro prism binoculars can be identified by their offset tubes; the objective lens is not in line with the ocular lens. The front lenses are usually closer together than the rear lenses, but the reverse can also be true, particularly in compact models. The Porro prism design is usually optically superior to the roof prism design, especially in medium priced class binoculars. Porro prism binoculars have a single pivot between the two halves of the binocular, and are therefore easy to adjust for the distance between your eyes.
Like roof prisms, not all Porro prisms are created equal. BAK-4 prisms are the best; they are made of superior optical glass that produces clearer images. These are what you want in your binoculars. BK-7 prisms are also used, usually in lower priced binoculars. These are satisfactory, but they are inferior to the BAK-4 prisms. Some manufacturers will not tell you what kind of prisms they use, usually because they are of inferior quality. BAK-4 prisms show a truer round, which translates to better light transmission and edge-to-edge sharpness
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.
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.
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.
Top Customer Reviews
on January 4, 2008
Amazon offered the lowest price and the service exceeded my expectation. Have used them with excellent results at night observing the moon and stars. Much, much better than the much less expensive 10X50 I have been using. Also did some bird watching and found the brightness and color accurracy also much better than the cheaper pair. Another pleasant surprise was the Nikon allowed viewing at a much closer distance really making their range for viewing much more practical. The weight is about the same as the cheaper pair and I can only wish they were half the weight but this weight seems to be about the norm for this size pair. Plan to take them with me on all hikes and trips. They seem to be very well constructed and the rubberized coating makes them easy to use and comfortable. Recommend them to anyone looking for a pair in this size range.
on April 28, 2008
I was looking for bird and animal watching binoculars. And wanted something with significant magnification. 10x and 12x didn't seem like enough to me. 16x is perfect. a little jittery to hold but not a problem. certainly worth it for the increased magnification. i was impressed at how easy it was to sight, line up, and track objects. I thought it would be harder with 16x magnification. definitely recommend these binoculars. great feel, not too heavy, and visuals look excellent to me.
on April 4, 2013
Nikon Action 16x50 EX ATB Binocular review- April 2013. I'm not employed by Nikon nor have my pockets been lined by a company who promotes them. Like many of you out there I sometimes wonder how many reviews have been written by people who were paid to leave a positive word about a product but had never used it personally. I bought these binoculars with my hard earned cash because I wanted a good pair of glasses for watching aircraft on the field where I work at KCHS. I have to say, the reviews that state that they are shaky without something to steady them on are well founded, but that's only because these binoculars have the ability to reach out and bring things from afar to your eyes like no other pair. I don't have that problem really, I find them quite useful for free support without a hard stance or a place to rest my elbows while looking through the lenses. While holding them in a natural stance, the shake is minimal, and I'd rather have these than a lower power such as 10x50. I also read in some reviews that they are heavy, well they aren't heavy. If you are a 72 year old woman then you may find them heavy, but they aren't heavy at all for a man in his late 30's. My co-workers at the airfield have tried them out and they all love the view they see. Watching 737's and MD-88's touch down a mile away with these binoculars gives you the same view that you would see if you were standing 200 feet away from the runway - earplugs not required. Boeing is building the 787 at my location and I've even handed these binoculars to other commercial pilots on the ramp so they can watch the new 787 take off and land .. they love the view and always hand the binoculars back with a huge smile on their face and a gracious heartfelt thankyou. We all know our commercial pilots are paid very little for what they do, so I get a huge kick out of making their day a little better with a small investment. Everyone I work with and come into contact with at my job loves these binoculars, and I do too. The Air force base is a good mile away across the field, but from where I stand on the commercial side I can read the tail numbers on the C-17 Globemasters parked on the air force base ramp. Without the binoculars, they are just little grey jets. I love these things, Nikon has made a great pair of binoculars for a great price. As a guy who likes to spot airplanes while getting paid to do so, these are in my work bag everyday within reach at any moment.. every day.
on April 29, 2008
I am not an expert in optics (digital cameras, binoculars, etc) but I can make the difference between good quality and not so good quality. I believe that the Nikon Action 16x50 binoculars fit, by far, in the first category. I was still not sure if I made the right decision when I purchased these, since I red several cons along the multitude of pros. Some of them were shaky image (due to the high zoom), pretty heavy for long periods of watching. All I can say now is that they are true, but these things fade by far in comparison to what this baby has to offer. Namely stunning crystal clear and sharp image (even at the edges), extremely rugged and ergonomic construction, fogproof and waterproof.
All in all, I would give it 10 out of 10 in a heartbeat.
All in all, I would give it 10 out of 10 in a heartbeat.
on November 6, 2010
Bought these binoculars because I couldn't afford the Steiner product w/these specs. I have the Steiner compact binoculars that I bought from Amazon and was so impressed...love them. So I thought I would also buy the larger Steiner binoculars. However, after the sticker shock and then reading reviews on Amazon for the Nikons (and I also have two Nikon cameras that I love), so I thought, lets get these binoculars. I am so impressed and totally love them. Their clarity and ease of use surpassed my expectations. I find I can even use them with or without my glasses...no problem. I highly recommend these binoculars on all levels.
on April 17, 2010
I didn't want a pair of low power binoculars as I plan to do a cruise out of Italy through the Eastern Met. If you have concerns about stability with the 16 power, I suggest a tripod because the unit comes with an adapter but, I bought one made by Nikon specifically for this model. The quality is excellent and the magnification is exactly what I wanted. I don't think you'll be disappointed with this product. I love it.
on December 26, 2010
The Nikon Extreme (EX) 16x50 binoculars have a field of view that is a bit too narrow for many uses most binoculars are put to but if you need to pull in really distant views or like to view stellar objects in the nighttime sky they work well. The optics are top notch. I thought about purchasing this product for some tome but the price was a barrier. Then I found them on Amazon at what I considered a workable price. This purchase has proved to be a good one.
Most Recent Customer Reviews
Nice binoculars. Originally bought the 12x50 and returned them for this more powerful model. Other than a tad tighter field of view, I don't find these much more difficult to...Read more
After using a good little pair of Pentax 10X50s for a long time I decided I needed more power. I wanted to try Nikon.Read more
I received these because of an error, I have ordered the 10x50 model, primarily for watching the night sky. These 16x50 have a 3.5º angle of view, so they're tough to hold steady.Read more
You get what you pay for. These are more clear than my Leopold 10x42 Acadia. Very easy to focus. Not shaky and no double vision. Excellent quality and Amazon had the best price.
these binocks are great Just what I was looking for.You need a steady hand but thats not a problem. Only knock is that the eyepiece adjusters are alittle fiddly.Read more
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This item: Nikon 7247 Action 16x50 EX Extreme All-Terrain Binocular