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Nikon 7237 Action 7x35 EX Extreme All-Terrain Binocular

4.7 out of 5 stars 73 customer reviews

Price: $129.00 & FREE Shipping. Details
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Nikon Action 7x35 EX Extreme ATB Binocular
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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: 7x
  • Objective lens: 35mm
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Technical Details


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This item: Nikon 7237 Action 7x35 EX Extreme All-Terrain Binocular
Customer Rating 4 out of 5 stars (73) 4 out of 5 stars (84) 4 out of 5 stars (312) 4 out of 5 stars (219)
Price $129.00 $64.99 $76.00 $264.14
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By 17th Street Photo Amazon.com Amazon.com Amazon.com
Magnification Maximum 8 8 8 8
Objective Lens Diameter 35 mm 35 mm 42 42 mm
Item Weight 1.76 pounds 2.32 pounds 2.38 pounds 1.34 pounds
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Product Description

Style: Nikon Action 7x35 EX Extreme ATB Binocular

Product Description

7 x 35mm - Prism Binoculars

From the Manufacturer

https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/atb_logo._.jpg

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

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

https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/7238_8x40_Action_EX-Glass.jpg
https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/7238_8x40_Action_EX-Eyecups.jpg
https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/7238_8x40_Action_EX-Body._.jpg

Additional Action EX Highlights:

https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/NikonNo-FaultBinoSm._.jpgWarranty 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.

https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/RealField_of_View._V202987058_.jpg

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.)

https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/ApparentField_of_View._V202987062_.jpg

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.

Prisms
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

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.


https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/Coatings._V202987056_.jpgMetal-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.
https://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/ReflectiveCharacteristics._V202987021_.jpgReflectance 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 coatinghttps://images-na.ssl-images-amazon.com/images/G/01/electronics/binoculars/nikon/PhaseCorrection._V202987059_.jpg
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 Information

Style:Nikon Action 7x35 EX Extreme ATB Binocular
Product Dimensions 7.9 x 7.2 x 3.3 inches
Item Weight 1.8 pounds
Shipping Weight 2.5 pounds (View shipping rates and policies)
ASIN B0001EFIGG
Item model number 7237
Customer Reviews
4.7 out of 5 stars 73 customer reviews

4.7 out of 5 stars
Best Sellers Rank #3,828 in Camera & Photo
#313 in Camera & Photo > Binoculars & Scopes > Binoculars
#485 in Camera & Photo > Binoculars & Scopes > Gun Scopes
Date first available at Amazon.com October 2, 2001

Warranty & Support

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Customer Reviews

Top Customer Reviews

Style Name: Nikon Action 7x35 EX Extreme ATB Binocular
This binocular was rated No 1 in the Cornell winter 2005 review of birding binocular in the economy class and it certainly desreves its No 1 spot. In this price range it is simple the best binocular for the begining birder, the budding sports fan. Being fully rubber armored and fully water proof they make very good hunting binoculars as well. The field of view is simply the widest i have ever seen. They are slightly on the heavier side at 28 oz, but the weight distribution is such that they feel much lighter than many 23-25 oz roof prisim binoculars. Eye glass wearers will also not have nay problem with these and the feature 17 mm + of eye relief and twist up eye cup with detents and feature not normally found in binoculars of this price range.

The only negative about these binoculars is that the eye piece cover is a bit to tight fitting and take a bit of effort to take off, but thats not much of negative considering all the other positives.

Highly recommended.
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Style Name: Nikon Action 7x35 EX Extreme ATB Binocular Verified Purchase
I needed some all purpose 7 x 35 binoculars for my Hawaii vacation. I took them everywhere from hikes to boat tours to watching whales, sea turtles, wild goats, ducks and sea birds in flight, etc. Previously, I only had a mediocre set of Bushnell binoculars that I thought were pretty good. I was going to buy the lightweight compact Olympus 8 x 21 binoculars recommended by Consumer Reports for about $60. Fortunately, they were out of stock everywhere. After a little research I found no positive experience from expert birder sites on the web to back it up, unlike this Nikon.

These seemed too good to be true in terms of quality and features. For $110 they had high quality construction and lenses and were designed to be truly waterproof and fogproof, so they won't go bad on you. Everything I read said the clarity was very good to excellent as well. That's an understatement. I can't imagine what more clarity or improved low light viewing you can get out of the more expensive $300 Nikons or the $500, $1000, $1500 Japanese or German expensive optics binoculars. I didn't even notice that I was using these Action EX binoculars when it was nearly dark. This is a mark of quality and these have it. The clarity is just outstanding. Why should I pay more ?

They feel good in the hands and are a pleasure to use. They look great, too. It's not a super lightweight compact, but these are real binoculars. They have the usual quick central focus and left/right eye difference focus adjustment. They are fully rubber coated to handle real world use with bangs, scrapes, and drops. The binoculars have the strap and the case doesn't, so you'll have to store the case or attach it to something else. If you can use and appreciate a pair of excellent quality binoculars, this is money very well spent.
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Style Name: Nikon Action 7x35 EX Extreme ATB Binocular
I'm something of an optics nut. Having been a photographer for a long time, I appreciate what good glass is capable of doing for you. I also know how much poor optics can ruin your day. Binoculars are different from camera lenses but binoculars are easier to judge. You just have to pick them up, adjust the diopter correction to your eyes and focus them. Judging other aspects such as durability, weight, speed of focus, comfort, fit to specific use and all the other non-optical issues takes a little longer.

As to the binoculars in question, these 7x35 Action Extreme EX Nikons impressed me a lot when I looked through them for the first time. Costing under a hundred bucks, I was astonished at the optical quality for the price. They may be the best bargain going in a basic binocular. I can compare this binocular to several other binoculars in the household and they will come up rivaling those that cost up to five times more in the sharpness, brightness and overall clarity of the image. No, the image is not razor sharp across the entire field. But, then again, most binoculars aren't sharp around the edges either. If you want sharp edges, consider spending over one thousand dollars as opposed to one hundred dollars. You will not get perfection for one hundred dollars but you will get outstanding quality for that money.

In Amazon's introductory description of these Action Extremes, there is some confusing information. The chart being used (as of this writing) shows comparisons of another series of Nikon binoculars. Since Nikon makes a lot of different binoculars, I'm not sure which specs are used in this chart--probably Monarchs since they are mentioned in the description.
Read more ›
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Style Name: Nikon Action 7x35 EX Extreme ATB Binocular
I've had my pair for about 3 years now and use them a lot for birding, the opera, and hiking. We keep them on the kitchen table to look at birds at our feeders, so they get almost daily use. The optics amaze me, and the binoculars have been perfectly dependable and easy to use. The very large eye relief makes them perfect for us, as we both wear glasses. I also like the adjustable eye cups. Rubber eye cups that curl back for use with glasses only last a year or two before cracking. These threaded eye cups should last indefinitely.

They're a bit heavy, so we bought a well padded camera strap to replace the thinner strap that came with the binocular. The case that comes with the binoculars works well, and has cutouts for straps.

We like this binocular so much that we are soon going to order another one so we both have one when hiking. I'm not tempted to get the 8x40 because the optics are so clear and bright that we can see birds much better with these than our previous, cheaper 8x binoculars. Also, a wide field of view is critical at the opera. The 8x40 is a little heavier, with a little narrower field of view than the 7x35.

Regarding the objective lens cover, I cut three slits into the sides of each cup so they slip on easily. Also, I've attached all the lens covers to the binocular with woven fishing line so they're never lost. They hang down about 8 inches when the binoculars are in use.
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