Product Description
The Premier Binocular - Sleek and Ergonomic. The Nikon Premier binocular line is engineered by those who know that hunting equipment is going to be pushed to the limits. It is designed for those who search for game for hours and those who demand to be able to judge an animal in fading light. Long considered one of the finest binocular designs in the optics world, the Premier utilizes a sturdy, die-cast magnesium-alloy body that cuts weight without giving up durability. Special fully multicoated optics has multiple layers of anti-reflective compounds on every glass surface for bright, vivid sight pictures. Phase-correction silver coated prisms enhance resolution for excellent detail and the ultimate in color contrast and clear, round images. The ergonomic Premier has durable and protective rubber-armored coating that provides a non-slip grip ΓÇô wet or dry. The soft-touch turn-and-slide rubber eyecups with multi-click adjustments improve the overall versatility of the Premier binocular for users with and without eyeglasses. The Premier line continues to feature a precise, conveniently located central focusing control positioned for fast, easy focusing. For waterproof/fogproof performance under the most adverse weather conditions the Premier line is O-ring sealed and filled with dry nitrogen. With rugged rubber armor for added durability and a firm grip even in the worst conditions, Nikon guarantees this binocular to be 100% waterproof and fogproof, each is backed by Nikon's 25 Year Limited Warranty and No-Fault Repair/Replacement Policy.
Product Details
- Amazon Sales Rank: #7457 in Camera & Photo
- Color: Black
- Brand: Nikon
- Model: 7535
- Dimensions: 3.20" h x 7.20" w x 8.60" l, 2.90 pounds
Features
- Phase-correction and silver coated high index prisms
- High resolution, fully multi-coated lens
- O-ring sealed and dry nitrogen filled for waterproof, fogproof performance
- Durable, light-weight magnesium-alloy body
- Turn-and-slide rubber eyecups with multi-click adjustments provide long eye relief; extremely eye-glass friendly
From the Manufacturer
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The Nikon Premier binocular line is engineered by those who know that hunting equipment is going to be pushed to the limits. It is designed for those who search for game for hours and those who demand to be able to judge an animal in fading light. Long considered one of the finest binocular designs in the optics world, the Premier utilizes a sturdy, die-cast magnesium-alloy body that cuts weight without giving up durability. Special fully multicoated optics has multiple layers of anti-reflective compounds on every glass surface for bright, vivid sight pictures. Phase-correction silver coated prisms enhance resolution for excellent detail and the ultimate in color contrast and clear, round images. The ergonomic Premier has durable and protective rubber-armored coating that provides a non-slip grip ΓÇô wet or dry. The soft-touch turn-and-slide rubber eyecups with multi-click adjustments improve the overall versatility of the Premier binocular for users with and without eyeglasses. The Premier line continues to feature a precise, conveniently located central focusing control positioned for fast, easy focusing. For waterproof/fogproof performance under the most adverse weather conditions the Premier line is O-ring sealed and filled with dry nitrogen. With rugged rubber armor for added durability and a firm grip even in the worst conditions, Nikon guarantees this binocular to be 100% waterproof and fogproof, each is backed by Nikon's 25 Year Limited Warranty and No-Fault Repair/Replacement Policy.
Technical Specs
| Model | 8x32 | 8x42 |
10x42 |
| Product Number | 7534 | 7535 | 7536 |
| Focusing System | CF | CF | CF |
| Magnification X | 8 | 8 | 10 |
| Objective Diameter (mm) | 32 | 42 | 42 |
| Angular Field of View (Real) | 7.8 | 7 | 6 |
| Angular Field of View (Apparent) | 57.2 | 52.1 | 55.3 |
| FOV @ 1000 yds. (ft.) | 409 | 267 | 314 |
| Close Focus Distance (ft.) | 8.2 | 9.8 | 9.8 |
| Exit Pupil (mm) | 4 | 5.3 | 4.2 |
| Relative Bightness | 16 | 28.1 | 17.6 |
| Eye Relief (mm) | 17 | 20 | 18.5 |
| Size - (L & W) (in) | 5.1 x 5.4 | 6.2 x 5.5 | 6.2 x 5.5 |
| Weight (oz) | 24.5 | 28 | 27.9 |
| Prism Coating | Phase Corrected, Silver Coating | Phase Corrected, Silver Coating | Phase Corrected, Silver Coating |
Nikon EDG Key Highlights
Phase-Corrected, Silver Coated Roof Prisms NikonΓÇÖs phase-correction roof prisms enhance resolution for excellent detail. The silver coatings, coupled with fully multicoated lenses deliver extremely bright, clear, vivid images across the periphery of the viewing field.
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A Rugged, Durable Binocular The Nikon EDG binocular was designed for ergonomic functionality, durability and precise balance in the hand. Its magnesium alloy body offers ruggedness at a sensible weight.
Nikon Premier Additional Highlights
- O-ring sealed and dry nitrogen filled for waterproof, fogproof performance
- Turn-and-slide rubber eyecups with multi-click adjustments are extremely eyeglass friendly
- Environmentally sound and lightweight Eco-Glass used throughout
Warranty InformationNikon 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 ΓÇô 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┬░
= 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.
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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 surfaceThe 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. |
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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. |
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Environmentally Sound Optical Glass (Eco-glass) Nikon seeks to minimize the risk of environmental pollution caused by lead and arsenic in optical glasses throughout the entire product lifecycle. ECO-GLASS, our new optical glass free of lead and arsenic, is to be incorporated in the optical systems for all of our products. | |
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Development of Eco-glass and its use in all products Since its foundation in 1917 as the first optical glass manufacturer in Japan, Nikon has always attributed special importance to the development and manufacture of optical glass for use in optical equipment. In the 1970s, in order to tackle emerging pollution problems, we reviewed the compositions of various types of optical glass used for our products and discontinued the use of cadmium in them. Subsequently in the 1990s, we developed "Eco-glass" that does not contain lead or arsenic, because we regarded our use of lead and arsenic in about 100 types of optical glass up to then as a serious environmental problem for our business activities and products. We thought that the problem should be solved before the arrival of the age of the global environment in the 21st century. Accordingly, over about five years from 1996, we invested nearly 400 million yen in R&D for Eco-glass. Furthermore, we started to use Eco-glass in the optical systems of all our products, including cameras, steppers and scanners, microscopes, and binoculars through close cooperation between the optical glass development/manufacturing department and the optical design department, while ensuring that our products retain higher optical performance than conventional products. Nikon delivers a wide spectrum of optical devices, which are all expected to constantly provide the highest optical performance in their respective fields. While meeting these expectations, we now use Eco-glass in nearly 100% of our products, excluding some with special optical specifications that Eco-glass cannot meet. Nikon will continue to minimize the risk of pollution (air, water and soil pollution, and contamination of waste disposal sites) caused by optical glass containing lead and arsenic throughout the lifecycle of its products, including the exploitation of materials and the manufacture, use, and disposal of products. |
 Lenses and prisms made using Eco-glass |
 Development of Eco-glass | |
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.
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