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Nikon is proud to provide EDG, a fieldscope for those whose adventurous spirit and dedication to success demandsperformance above all else. The most dynamic and advanced fieldscope in the company’s history, EDG (pronounced “edge” was engineered using Nikon’s latest leading edge technology, but refined by nearly a century of glass-making heritage. The same incredible, high-resolution performance of the EDG Fieldscope continues to be made available in the remarkable EDG Fieldscope line. Some with the features in the new EDG Fieldscope line include a similar exclusive ED glass lenses and dielectric high reflective multilayer prism coatings for their Fieldscope counterparts, delivering extraordinarily high contrast images in a sleek Fieldscope body.
The EDG Fieldscope line’s proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness.
Larger, 85mm and 65mm lenses allow for the wider field of view—and both models come complete having an EDG zoom eyepiece, and are compatible with a new compilation of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line can be obtained in an angled or straight body to suit any expedition.
“By incorporating lots of Nikon’s new technologies the modern EDG line of Fieldscopes gives hunters the absolute most suitable choice for long range viewing,” said Jon LaCorte Senior Product Marketing Manager. “Combine among these Fieldscopes having an EDG Fieldscope and you are ready for any hunt on any continent.”
The new king of full-sized Nikon Fieldscopes, the pro-level EDG 85mm provides the ultimate in optical performance thanks to Nikon’s exclusive optical design with ED lenses. A rugged waterproof, fogproof new body design allows users to take this new Fieldscope about the most demanding hunts inside world.
Supreme ruggedness and a substantial objective lens increase the risk for 65mm EDG Fieldscope the right choice when counting every ounce in a very pack, but still should see every detail about the hunt which has been planned for years. The new EDG won’t disappoint, delivering extraordinarily bright, high-resolution views and truly remarkable low-light performance. All waterproof and fogproof in a stylish, lightweight new body design.
Nikon EDG Key Highlights
Pushing the Limits of Optical Perfection The EDG Fieldscope harnesses the optical superiority of Nikon’s legendary and dear ED (Extra-low Dispersion) glass to push the limits of optical perfection. Coveted through the world’s greatest photographers is Nikon’s legendary Nikkor lenses, this exclusive glass was developed to eliminate chromatic aberration occurring when light rays of varying wavelengths pass through optical glass. Nikon EDG Fieldscopes offer a similar results on the world’s most serious optics users--high contrast, high res images that are razor sharp and free of flare. Enhanced
Enhanced Resolution with Phase-Correction Coated Roof Prisms. Nikon’s EDG optical system incorporates phase-correction coated roof prisms to improve resolution, also as dielectric coated sub-prisms to maximize light transmission. Interacting with fully multicoated lenses and ED glass, the high-grade prisms deliver extremely bright, clear, vivid images throughout the periphery of the viewing field.
A Rugged, Durable Fieldscope The Nikon EDG Fieldscope was designed using a rugged waterproof, fogproof body design which allows users to consider this new Fieldscope about the most demanding hunts inside the world
Nikon EDG Additional Highlights
Long Eye Relief Eyepieces In all models the Nikon EDG features long eye relief for max view with or without eyewear.
Fixed Power Eyepieces The EDG Fieldscopes are compatible which has a new group of interchangeable EDG fixed power eyepieces for custom viewing.
Warranty Information
Nikon is focused on quality, performance and total customer satisfaction. If your Nikon Fieldscope, Spotting Scope or Fieldscope requires service or repair not included in our 25 Year Limited Warranty, Nikon will repair or change it (even it had been your fault) just for $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 may be the angle with the visible field, seen without moving the Fieldscopes, measured in the central point with the objective lens. The larger the worthiness is, the wider the viewfield available. For example, Fieldscopes with a wider field of view are advantageous for locating fast-moving wild birds inside viewfield. This applies for locating small nebulas or perhaps a cluster of stars in astronomical observations.
Apparent field of view
Apparent field of view will be the angle of the magnified field if you run through Fieldscopes.
The larger the apparent field of view is, the wider the concept of view you are able to see even at high magnifications.
With the standard method used previously, the apparent field of view was calculated by multiplying the real field of view from the Fieldscope magnification. (With this formula, apparent field of view wider than 65˚ is called wide field of view.)
Relative brightness
Relative brightness value is obtained by squaring the diameter from the exit pupil. The greater the relative brightness is, the brighter the look will be. With 8x42 Fieldscopes, the brightness is (42÷8)2= 28.1. This implies if the magnification will be the same, the greater the effective diameter in the objective lens, the brighter the image will be.
Do Fieldscopes using the same exit pupil offer exactly the same brightness?
No. Brightness can vary even when the exit pupil could be the same. This is for the reason that amount of light reaching the viewer's eyes varies according towards the quantity of lens elements superiority lens/prism coatings. Superior optical design and high quality coating greatly contribute towards the brightness of Fieldscopes. Brightness values specified in product brochures, etc. are theoretical ones calculated inside the design process. Please note these factors comparing actual brightness values.
Prism Coatings
Multilayer coating can also be put on prisms to raise transmittance. A roof prism system has one surface it doesn't feature total internal reflection, so vapor deposition with metals, etc. must be utilized to improve the reflectivity on this surface. Also, phase-correction coating on roof surface ensures high-contrast images.
* Fieldscopes' brightness and contrast are affected by not only prism coatings, but additionally the number of objective lens and eyepiece lens, and forms of coatings.
Metal-vaporized, high-reflectivity prism coating
Using vacuum-vaporization technology, metallic material for example aluminum or silver is used on the reverse side of an prism surface that is not totally reflective. This raises the reflectivity with 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 over 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 in addition through the total optical system including the amount of lenses and quality of coatings.
Phase-correction coating
A roof (Dach) surface may cause phase shift of light that affects image resolution. This phenomenon is brought on by phase differences arising from total light reflection on the roof (Dach) surface and it can occur with a good perfectly processed prism. Phase-correction coating is used towards the surface to minimize lack of resolution, ensuring high-contrast images.
Chromatic Aberration
• Photos are simulated viewfinder images. This is caused by the difference in light wavelength. The center point or magnification of an lens varies according for the wavelength of each and every kind of incident light. Therefore, if you take a glance at an image via a lens with chromatic aberration, color fringing may occur. Because an individual lens cannot compensate for chromatic aberration, two lenses of various optical characteristics are combined to correct this aberration. Nikon's original ED (Extra-low-Dispersion) glass lenses effectively compensate for color fringing.
ED glass and secondary spectrum
Visible light is consists of lights of various wavelengths. Gathering up all of the lights to your point is well suited for objective lenses.
With a single lens, because light is bent inside the in an identical way as using a prism, the focal lengths of lights with some other wavelengths vary. As a result, not every light rays reach the same point, which causes chromatic aberration.
An achromatic lens made with conventional glass materials can match focal lengths of two different wavelengths. For red and blue colors, for example, that contain both ends of the wavelengths of visible light, chromatic aberration could be reduced to some certain extent by conforming their focal lengths. However, with more detailed examination, because light with wavelengths including green has different focal lengths, residual chromatic aberration results. This residual chromatic aberration is referred to as secondary spectrum.
Combinations of conventional glasses cannot solve this secondary spectrum problem, but particular optical materials which have a very unique characteristic of dispersion are needed.
ED (Extra-low Dispersion) glass has this unique characteristic then when combined with glasses, minimizes the results from the secondary spectrum. Comparing to achromatic lenses, ED glass reduces chromatic aberration to a remarkable degree.
Twilight Factor
The factor that has the greatest influence on resolution or image detail, is planning to be dependent upon the amount of sunshine available during some time of observation. During daylight hours, when your skills pupil size will be no more than 2 to 3mm, magnification will be the principal factor in image resolution. At night, using the eye pupil dilated to 6 to 8mm, aperture size will be the controlling factor. In twilight conditions both of those factors control resolution effectiveness along with the twilight factor is the term that compares binocular performance under these conditions.
The twilight factor is calculated by using the square root from the product of the magnification and the aperture. The higher the twilight factor, the greater the resolution in the binocular when observing under dim light conditions. For example, a ten X 40 (twilight factor 20) would effectively resolve better under these conditions than a 7 X 35 (twilight factor 15.4) though the 10 X 40 includes a smaller exit pupil. Remember, however, how the twilight factor does require into account the transmittance or quality of the optical system.
The incredible, high-resolution performance with the EDG binocular has become available in the remarkable new EDG Fieldscope line. Some from the features in the new EDG Fieldscope line include the same exclusive ED glass lenses and dielectric high reflective multilayer prism coatings his or her binocular counterparts, delivering extraordinarily high contrast images inside a sleek Fieldscope body. The EDG Fieldscope line's proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness. Larger, 85mm and 65mm lenses allow for the wider field of view—and both models come complete with the EDG zoom eyepiece, and are compatible having a new series of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line can be acquired in an angled or straight body to accommodate any expedition. "By incorporating many of Nikon's new technologies the new EDG distinct Fieldscopes gives hunters the absolute smartest choice for long range viewing," said Jon LaCorte Senior Product Marketing Manager. "Combine one of these Fieldscopes with an EDG binocular and you are ready for almost any hunt on any continent."
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Nikon is proud to give EDG, a fieldscope for all those whose adventurous spirit and dedication to success demandsperformance above all else. The most dynamic and advanced fieldscope within the company’s history, EDG (pronounced “edge” was engineered using Nikon’s latest leading edge technology, but refined by nearly a century of glass-making heritage. The same incredible, high-resolution performance of the EDG Fieldscope may be provided in the remarkable EDG Fieldscope line. Some in the features within the new EDG Fieldscope line include a similar exclusive ED glass lenses and dielectric high reflective multilayer prism coatings for their Fieldscope counterparts, delivering extraordinarily high contrast images in a sleek Fieldscope body.
The EDG Fieldscope line’s proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness.
Larger, 85mm and 65mm lenses allow for the wider field of view—and both models come complete with an EDG zoom eyepiece, and are compatible which has a new number of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line is available in an angled or straight body to suit any expedition.
“By incorporating lots of Nikon’s new technologies the new EDG line of Fieldscopes gives hunters the absolute smartest choice for long range viewing,” said Jon LaCorte Senior Product Marketing Manager. “Combine among these Fieldscopes by having an EDG Fieldscope and you eventually be ready for any hunt on any continent.”
The new king of full-sized Nikon Fieldscopes, the pro-level EDG 85mm provides the best in optical performance thanks to Nikon’s exclusive optical design with ED lenses. A rugged waterproof, fogproof new body design allows users to take this new Fieldscope for the most demanding hunts inside the world.
Supreme ruggedness and a substantial objective lens make the 65mm EDG Fieldscope the perfect choice when counting every ounce in a very pack, though need to see every detail about the hunt that has been planned for years. The new EDG won’t disappoint, delivering extraordinarily bright, high-resolution views and truly remarkable low-light performance. All waterproof and fogproof in a stylish, lightweight new body design.
Nikon EDG Key Highlights
Pushing the Limits of Optical Perfection The EDG Fieldscope harnesses the optical superiority of Nikon’s legendary and expensive ED (Extra-low Dispersion) glass to push the limits of optical perfection. Coveted by the world’s greatest photographers is Nikon’s legendary Nikkor lenses, this exclusive glass was designed to eliminate chromatic aberration that occurs when light rays of varying wavelengths pass through optical glass. Nikon EDG Fieldscopes offer exactly the same results for the world’s most serious optics users--high contrast, high res images that are razor sharp and clear of flare. Enhanced
Enhanced Resolution with Phase-Correction Coated Roof Prisms. Nikon’s EDG optical system incorporates phase-correction coated roof prisms to improve resolution, too as dielectric coated sub-prisms to increase light transmission. Interacting with fully multicoated lenses and ED glass, the high-grade prisms deliver extremely bright, clear, vivid images across the periphery from the viewing field.
A Rugged, Durable Fieldscope The Nikon EDG Fieldscope was designed having a rugged waterproof, fogproof body design which allows users to consider this new Fieldscope on the most demanding hunts within the world
Nikon EDG Additional Highlights
Long Eye Relief Eyepieces In all models the Nikon EDG features long eye relief for maximum view with or without eyewear.
Fixed Power Eyepieces The EDG Fieldscopes are compatible which has a new compilation of interchangeable EDG fixed power eyepieces for custom viewing.
Warranty Information
Nikon is dedicated to quality, performance and total customer satisfaction. If your Nikon Fieldscope, Spotting Scope or Fieldscope requires service or repair not protected by our 25 Year Limited Warranty, Nikon will repair or change it out (even it turned out 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 will be the angle of the visible field, seen without moving the Fieldscopes, measured in the central point in the objective lens. The larger the worth is, the wider the viewfield available. For example, Fieldscopes using a wider field of view are advantageous for locating fast-moving wild birds within the viewfield. This applies to find small nebulas or a cluster of stars in astronomical observations.
Apparent field of view
Apparent field of view could be the angle of the magnified field if you look over Fieldscopes.
The larger the apparent field of view is, the wider the field of view you is capable of see even at high magnifications.
With the typical method used previously, the apparent field of view was calculated by multiplying the real field of view with the Fieldscope magnification. (With this formula, apparent field of view wider than 65˚ is known as wide field of view.)
Relative brightness
Relative brightness value is obtained by squaring the diameter with the exit pupil. The greater the relative brightness is, the brighter the look will be. With 8x42 Fieldscopes, the brightness is (42÷8)2= 28.1. What this means is if the magnification is the same, the bigger the effective diameter from the objective lens, the brighter the style will be.
Do Fieldscopes while using same exit pupil offer exactly the same brightness?
No. Brightness can vary greatly even when the exit pupil could be the same. This is because the amount of sunshine reaching the viewer's eyes varies according towards the variety of lens elements and excellence of lens/prism coatings. Superior optical design and quality coating greatly contribute to the brightness of Fieldscopes. Brightness values per 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 placed on prisms to raise transmittance. A roof prism system has one surface that does not feature total internal reflection, so vapor deposition with metals, etc. has to be used to raise the reflectivity of this surface. Also, phase-correction coating on roof surface ensures high-contrast images.
* Fieldscopes' brightness and contrast are impacted by not only prism coatings, but also the variety of objective lens and eyepiece lens, and types of coatings.
Metal-vaporized, high-reflectivity prism coating
Using vacuum-vaporization technology, metallic material including aluminum or silver is used to the reverse side of the prism surface that is not totally reflective. This raises the reflectivity with 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 throughout 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 with the reflective mirror, but in addition with the total optical system like the number of lenses and excellence of coatings.
Phase-correction coating
A roof (Dach) surface may cause phase shift of sunshine that affects image resolution. This phenomenon is due to phase differences arising from total light reflection on the roof (Dach) surface also it can happen with a good perfectly processed prism. Phase-correction coating is used towards the surface to reduce loss in resolution, ensuring high-contrast images.
Chromatic Aberration
• Photos are simulated viewfinder images. This is caused by the difference in light wavelength. The focal point or magnification of an lens varies according on the wavelength of each one kind of incident light. Therefore, in the event you have a glance at an image by having a lens with chromatic aberration, color fringing may occur. Because just one lens cannot compensate for chromatic aberration, two lenses of various optical characteristics are combined to improve this aberration. Nikon's original ED (Extra-low-Dispersion) glass lenses effectively compensate for color fringing.
ED glass and secondary spectrum
Visible light is made up of lights of various wavelengths. Gathering up all of those lights to a point is ideal for objective lenses.
With just one lens, because light is bent within the same manner as which has a prism, the focal lengths of lights with assorted wavelengths vary. As a result, not all light rays reach the same point, which causes chromatic aberration.
An achromatic lens created using conventional glass materials can match focal lengths of two different wavelengths. For red and blue colors, for example, which contain both ends from the wavelengths of visible light, chromatic aberration could be reduced to your certain extent by conforming their focal lengths. However, with a rise of detailed examination, because light with other wavelengths including green has different focal lengths, residual chromatic aberration results. This residual chromatic aberration is referred to as secondary spectrum.
Combinations of conventional glasses cannot solve this secondary spectrum problem, but particular optical materials which have a unique characteristic of dispersion are needed.
ED (Extra-low Dispersion) glass has this phenomenal characteristic when combined with glasses, minimizes the consequences from the secondary spectrum. Comparing to achromatic lenses, ED glass reduces chromatic aberration with a remarkable degree.
Twilight Factor
The factor which has the best effect on resolution or image detail, will be dependent upon the amount of light available during time of observation. During daylight hours, when your skills pupil size will be only about 2 to 3mm, magnification will be the principal aspect in image resolution. At night, with the eye pupil dilated to 6 to 8mm, aperture size may be the controlling factor. In twilight conditions both of those factors control resolution effectiveness along with the twilight factor could be the term that compares binocular performance under these conditions.
The twilight factor is calculated by using the square root with the product in the magnification along with the aperture. The bigger the twilight factor, the greater the resolution with the binocular when observing under dim light conditions. For example, a ten X 40 (twilight factor 20) would effectively resolve better under these conditions than the usual 7 X 35 (twilight factor 15.4) despite the actual fact that the 10 X 40 features a smaller exit pupil. Remember, however, how the twilight factor does require into account the transmittance or quality from the optical system.
The incredible, high-resolution performance from the EDG binocular is currently available in a remarkable new EDG Fieldscope line. Some of the features inside new EDG Fieldscope line include a similar exclusive ED glass lenses and dielectric high reflective multilayer prism coatings for their binocular counterparts, delivering extraordinarily high contrast images in a sleek Fieldscope body. The EDG Fieldscope line's proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness. Larger, 85mm and 65mm lenses allow for a wider field of view—and both models come complete having an EDG zoom eyepiece, and are compatible with a new number of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line can be obtained within an angled or straight body to suit any expedition. "By incorporating lots of Nikon's new technologies the new EDG distinctive line of Fieldscopes gives hunters the absolute smartest choice for very long range viewing," said Jon LaCorte Senior Product Marketing Manager. "Combine among these Fieldscopes having an EDG binocular and you're ready for any hunt on any continent."
.You can choose to buy a product and
Nikon is proud to present EDG, a fieldscope for those whose adventurous spirit and dedication to success demandsperformance above all else. The most dynamic and advanced fieldscope within the company’s history, EDG (pronounced “edge” was engineered using Nikon’s latest leading edge technology, but refined by nearly a century of glass-making heritage. The same incredible, high-resolution performance with the EDG Fieldscope has been made available inside the remarkable EDG Fieldscope line. Some in the features within the new EDG Fieldscope line include exactly the same exclusive ED glass lenses and dielectric high reflective multilayer prism coatings his or her Fieldscope counterparts, delivering extraordinarily high contrast images in a sleek Fieldscope body.
The EDG Fieldscope line’s proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness.
Larger, 85mm and 65mm lenses allow for the wider field of view—and both models come complete with an EDG zoom eyepiece, and so are compatible using a new group of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line can be obtained within an angled or straight body to match any expedition.
“By incorporating many of Nikon’s new technologies the brand new EDG type of Fieldscopes gives hunters the absolute most suitable choice for long range viewing,” said Jon LaCorte Senior Product Marketing Manager. “Combine among these Fieldscopes with the EDG Fieldscope and you eventually be ready for virtually any hunt on any continent.”
The new king of full-sized Nikon Fieldscopes, the pro-level EDG 85mm provides the greatest in optical performance thanks to Nikon’s exclusive optical design with ED lenses. A rugged waterproof, fogproof new body design allows users to take this new Fieldscope about the most demanding hunts in the world.
Supreme ruggedness as well as a substantial objective lens increase the danger for 65mm EDG Fieldscope an ideal choice when counting every ounce in the pack, but still have to see every detail on the hunt which has been planned for years. The new EDG won’t disappoint, delivering extraordinarily bright, high-resolution views and truly remarkable low-light performance. All waterproof and fogproof inside a stylish, lightweight new body design.
Nikon EDG Key Highlights
Pushing the Limits of Optical Perfection The EDG Fieldscope harnesses the optical superiority of Nikon’s legendary and costly ED (Extra-low Dispersion) glass to push the limits of optical perfection. Coveted by the world’s greatest photographers is Nikon’s legendary Nikkor lenses, this exclusive glass was designed to eliminate chromatic aberration occurring when light rays of varying wavelengths pass through optical glass. Nikon EDG Fieldscopes offer exactly the same results on the world’s most serious optics users--high contrast, high definition images which can be razor sharp and clear of flare. Enhanced
Enhanced Resolution with Phase-Correction Coated Roof Prisms. Nikon’s EDG optical system incorporates phase-correction coated roof prisms to enhance resolution, too as dielectric coated sub-prisms to maximise light transmission. Interacting with fully multicoated lenses and ED glass, the high-grade prisms deliver extremely bright, clear, vivid images through the periphery in the viewing field.
A Rugged, Durable Fieldscope The Nikon EDG Fieldscope was designed using a rugged waterproof, fogproof body design allowing users to adopt this new Fieldscope around the most demanding hunts inside world
Nikon EDG Additional Highlights
Long Eye Relief Eyepieces In all models the Nikon EDG features long eye relief for optimum view with or without eyewear.
Fixed Power Eyepieces The EDG Fieldscopes are compatible having a new series of interchangeable EDG fixed power eyepieces for custom viewing.
Warranty Information
Nikon is committed to quality, performance and total customer satisfaction. If your Nikon Fieldscope, Spotting Scope or Fieldscope requires service or repair not protected by our 25 Year Limited Warranty, Nikon will repair or change it out (even it had been your fault) for $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 in the visible field, seen without moving the Fieldscopes, measured from your central point in the objective lens. The larger the worth is, the wider the viewfield available. For example, Fieldscopes with a wider field of view are advantageous for locating fast-moving wild birds within the viewfield. And also this applies for locating 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 if you look through Fieldscopes.
The larger the apparent field of view is, the wider the joy 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 actual field of view by the Fieldscope magnification. (With this formula, apparent field of view wider than 65˚ is named wide field of view.)
Relative brightness
Relative brightness value is obtained by squaring the diameter of the exit pupil. The greater the relative brightness is, the brighter the style will be. With 8x42 Fieldscopes, the brightness is (42÷8)2= 28.1. This implies if the magnification is the same, the greater the effective diameter of the objective lens, the brighter the image will be.
Do Fieldscopes using the same exit pupil offer the identical brightness?
No. Brightness may vary even when the exit pupil could be the same. This is for the reason that amount of light reaching the viewer's eyes varies according to the variety of lens elements superiority lens/prism coatings. Superior optical design and quality coating greatly contribute to the brightness of Fieldscopes. Brightness values per product brochures, etc. are theoretical ones calculated inside design process. Please be aware these factors when comparing actual brightness values.
Prism Coatings
Multilayer coating can be applied to prisms to raise transmittance. A roof prism system has one surface that doesn't feature total internal reflection, so vapor deposition with metals, etc. should be utilized to enhance the reflectivity with this surface. Also, phase-correction coating on roof surface ensures high-contrast images.
* Fieldscopes' brightness and contrast are affected by not only prism coatings, but also the amount 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 used to the reverse side of your prism surface that isn't 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 throughout 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 additionally with the total optical system including the amount of lenses and quality of coatings.
Phase-correction coating
A roof (Dach) surface may cause phase shift of sunshine that affects image resolution. This phenomenon is due to phase differences arising from total light reflection on a roof (Dach) surface and yes it can occur with even a perfectly processed prism. Phase-correction coating is applied to the surface to attenuate loss of resolution, ensuring high-contrast images.
Chromatic Aberration
• Photos are simulated viewfinder images. This is caused with a difference in light wavelength. The focal point or magnification of your lens varies according for the wavelength of each form of incident light. Therefore, if you look at a graphic through a lens with chromatic aberration, color fringing may occur. Because a single lens cannot compensate for chromatic aberration, two lenses of various optical characteristics are combined to correct this aberration. Nikon's original ED (Extra-low-Dispersion) glass lenses effectively compensate for color fringing.
ED glass and secondary spectrum
Visible light is composed of lights of various wavelengths. Gathering up all of these lights to a point is perfect for objective lenses.
With a single lens, because light is bent within the same way as having a prism, the focal lengths of lights with different wavelengths vary. As a result, don't assume all light rays reach a similar point, which causes chromatic aberration.
An achromatic lens created using conventional glass materials can match focal lengths of two different wavelengths. For red and blue colors, for example, which contain both ends of the wavelengths of visible light, chromatic aberration might be reduced to your certain extent by conforming their focal lengths. However, with increased detailed examination, because light with other wavelengths for example green has different focal lengths, residual chromatic aberration results. This residual chromatic aberration is known as secondary spectrum.
Combinations of conventional glasses cannot solve this secondary spectrum problem, but particular optical materials which use a unique characteristic of dispersion are needed.
ED (Extra-low Dispersion) glass has this unique characteristic so when combined with other glasses, minimizes the effects with the secondary spectrum. Comparing to achromatic lenses, ED glass reduces chromatic aberration to your remarkable degree.
Twilight Factor
The factor that has the maximum effect on resolution or image detail, will be dependent upon the amount of light available during time of observation. During daylight hours, when your talent pupil size will be only about 2 to 3mm, magnification is going to be the principal aspect in image resolution. At night, with the eye pupil dilated to 6 to 8mm, aperture size could be the controlling factor. In twilight conditions both of the factors control resolution effectiveness and the twilight factor could be the term that compares binocular performance under these conditions.
The twilight factor is calculated by using the square root with the product from the magnification along with the aperture. The higher the twilight factor, the better the resolution in the binocular when observing under dim light conditions. For example, a ten X 40 (twilight factor 20) would effectively resolve better under these conditions compared to a 7 X 35 (twilight factor 15.4) even though the 10 X 40 includes a smaller exit pupil. Remember, however, that this twilight factor does require into account the transmittance or quality with the optical system.
The incredible, high-resolution performance from the EDG binocular has become available in a very remarkable new EDG Fieldscope line. Some from the features inside the new EDG Fieldscope line include exactly the same exclusive ED glass lenses and dielectric high reflective multilayer prism coatings as his or her binocular counterparts, delivering extraordinarily high contrast images in a very sleek Fieldscope body. The EDG Fieldscope line's proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness. Larger, 85mm and 65mm lenses allow to get a wider field of view—and both models come complete by having an EDG zoom eyepiece, and so are compatible using a new group of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line is available in an angled or straight body to suit any expedition. "By incorporating lots of Nikon's new technologies the new EDG type of Fieldscopes gives hunters the absolute smartest choice for very long range viewing," said Jon LaCorte Senior Product Marketing Manager. "Combine among these Fieldscopes with the EDG binocular and you are ready for almost any hunt on any continent."
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Nikon is proud presenting EDG, a fieldscope for all those whose adventurous spirit and dedication to success demandsperformance above all else. The most dynamic and advanced fieldscope within the company’s history, EDG (pronounced “edge” was engineered using Nikon’s latest cutting edge technology, but refined by nearly a century of glass-making heritage. The same incredible, high-resolution performance from the EDG Fieldscope may be provided inside remarkable EDG Fieldscope line. Some with the features inside the new EDG Fieldscope line include the identical exclusive ED glass lenses and dielectric high reflective multilayer prism coatings as their Fieldscope counterparts, delivering extraordinarily high contrast images inside a sleek Fieldscope body.
The EDG Fieldscope line’s proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness.
Larger, 85mm and 65mm lenses allow for any wider field of view—and both models come complete having an EDG zoom eyepiece, and are compatible using a new compilation of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line can be obtained within an angled or straight body to match any expedition.
“By incorporating many of Nikon’s new technologies the modern EDG distinctive line of Fieldscopes gives hunters the absolute best option for very long range viewing,” said Jon LaCorte Senior Product Marketing Manager. “Combine certainly one of these Fieldscopes with an EDG Fieldscope and you are ready for just about any hunt on any continent.”
The new king of full-sized Nikon Fieldscopes, the pro-level EDG 85mm provides the ultimate in optical performance thanks to Nikon’s exclusive optical design with ED lenses. A rugged waterproof, fogproof new body design allows users to adopt this new Fieldscope for the most demanding hunts inside the world.
Supreme ruggedness and a substantial objective lens increase the chance for 65mm EDG Fieldscope the perfect choice when counting every ounce in a very pack, yet still have to see every detail about the hunt which includes been planned for years. The new EDG won’t disappoint, delivering extraordinarily bright, high-resolution views and truly remarkable low-light performance. All waterproof and fogproof in a stylish, lightweight new body design.
Nikon EDG Key Highlights
Pushing the Limits of Optical Perfection The EDG Fieldscope harnesses the optical superiority of Nikon’s legendary and expensive ED (Extra-low Dispersion) glass to push the limits of optical perfection. Coveted through the world’s greatest photographers is Nikon’s legendary Nikkor lenses, this exclusive glass was developed to eliminate chromatic aberration occurring when light rays of varying wavelengths pass through optical glass. Nikon EDG Fieldscopes offer a similar results on the world’s most serious optics users--high contrast, high res images which can be razor sharp and without any flare. Enhanced
Enhanced Resolution with Phase-Correction Coated Roof Prisms. Nikon’s EDG optical system incorporates phase-correction coated roof prisms to enhance resolution, too as dielectric coated sub-prisms to maximize light transmission. Interacting with fully multicoated lenses and ED glass, the high-grade prisms deliver extremely bright, clear, vivid images over the periphery with the viewing field.
A Rugged, Durable Fieldscope The Nikon EDG Fieldscope was created which has a rugged waterproof, fogproof body design that enables users to consider this new Fieldscope on the most demanding hunts within the world
Nikon EDG Additional Highlights
Long Eye Relief Eyepieces In all models the Nikon EDG features long eye relief for optimum view with or without eyewear.
Fixed Power Eyepieces The EDG Fieldscopes are compatible using a new series of interchangeable EDG fixed power eyepieces for custom viewing.
Warranty Information
Nikon is dedicated to quality, performance and total customer satisfaction. If the Nikon Fieldscope, Spotting Scope or Fieldscope requires service or repair not covered by our 25 Year Limited Warranty, Nikon will repair or put it back (even it turned out your fault) for $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 could be the angle of the visible field, seen without moving the Fieldscopes, measured through the central point with the objective lens. The larger the value is, the wider the viewfield available. For example, Fieldscopes with a wider field of view are advantageous for locating fast-moving wild birds inside viewfield. And also this applies to find small nebulas or even a cluster of stars in astronomical observations.
Apparent field of view
Apparent field of view may be the angle of the magnified field whenever you look over Fieldscopes.
The larger the apparent field of view is, the wider the concept of view you are able to see even at high magnifications.
With the standard method used previously, the apparent field of view was calculated by multiplying the real field of view from the Fieldscope magnification. (With this formula, apparent field of view wider than 65˚ is named wide field of view.)
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 Fieldscopes, the brightness is (42÷8)2= 28.1. What this means is when the magnification will be the same, the larger the effective diameter from the objective lens, the brighter the style will be.
Do Fieldscopes while using same exit pupil offer the identical brightness?
No. Brightness may vary even though the exit pupil is the same. This is for the reason that amount of light reaching the viewer's eyes varies according for the quantity of lens elements and quality of lens/prism coatings. Superior optical design and quality coating greatly contribute on the brightness of Fieldscopes. Brightness values per product brochures, etc. are theoretical ones calculated in the design process. Please be aware these factors comparing actual brightness values.
Prism Coatings
Multilayer coating is also placed on prisms to raise transmittance. A roof prism system has one surface it doesn't feature total internal reflection, so vapor deposition with metals, etc. has to be used to enhance the reflectivity with this surface. Also, phase-correction coating on roof surface ensures high-contrast images.
* Fieldscopes' brightness and contrast are suffering from not only prism coatings, but also the amount of objective lens and eyepiece lens, and forms of coatings.
Metal-vaporized, high-reflectivity prism coating
Using vacuum-vaporization technology, metallic material such as aluminum or silver is applied towards the reverse side of the 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 including the quantity of lenses superiority coatings.
Phase-correction coating
A roof (Dach) surface may cause phase shift of light that affects image resolution. This phenomenon is due to phase differences arising from total light reflection on the roof (Dach) surface plus it may appear with a good perfectly processed prism. Phase-correction coating is applied towards the surface to attenuate loss of resolution, ensuring high-contrast images.
Chromatic Aberration
• Photos are simulated viewfinder images. This is caused by the difference in light wavelength. The focal point or magnification of an lens varies according on the wavelength of each and every type of incident light. Therefore, in the big event you take a look at an image by having a lens with chromatic aberration, color fringing may occur. Because a single lens cannot compensate for chromatic aberration, two lenses of different optical characteristics are combined to improve this aberration. Nikon's original ED (Extra-low-Dispersion) glass lenses effectively compensate for color fringing.
ED glass and secondary spectrum
Visible light is made up of lights of various wavelengths. Gathering up all of those lights to your point is ideal for objective lenses.
With just one lens, because light is bent inside the in an identical way as having a prism, the focal lengths of lights with various wavelengths vary. As a result, not all light rays reach the identical point, which causes chromatic aberration.
An achromatic lens made with conventional glass materials can match focal lengths of two different wavelengths. For red and blue colors, for example, that contain both ends of the wavelengths of visible light, chromatic aberration could be reduced to your certain extent by conforming their focal lengths. However, with additional detailed examination, because light with wavelengths like green has different focal lengths, residual chromatic aberration results. This residual chromatic aberration is known as secondary spectrum.
Combinations of conventional glasses cannot solve this secondary spectrum problem, but particular optical materials which use a unique characteristic of dispersion are needed.
ED (Extra-low Dispersion) glass has this unique characteristic so when combined with other glasses, minimizes the results in the secondary spectrum. Comparing to achromatic lenses, ED glass reduces chromatic aberration to your remarkable degree.
Twilight Factor
The factor that has the greatest effect on resolution or image detail, will be dependent upon the amount of light available during some time of observation. During daylight hours, when your skills pupil size will probably be only about 2 to 3mm, magnification will probably be the principal aspect in image resolution. At night, with the eye pupil dilated to 6 to 8mm, aperture size may be the controlling factor. In twilight conditions both of those factors control resolution effectiveness along with the twilight factor will be the term that compares binocular performance under these conditions.
The twilight factor is calculated by using the square root from the product with the magnification and also the aperture. The bigger the twilight factor, the greater the resolution from the binocular when observing under dim light conditions. For example, a ten X 40 (twilight factor 20) would effectively resolve better under these conditions compared to a 7 X 35 (twilight factor 15.4) even though the 10 X 40 has a smaller exit pupil. Remember, however, the twilight factor does not take under consideration the transmittance or quality with the optical system.
The incredible, high-resolution performance with the EDG binocular is currently available inside a remarkable new EDG Fieldscope line. Some from the features inside the new EDG Fieldscope line include the identical exclusive ED glass lenses and dielectric high reflective multilayer prism coatings his or her binocular counterparts, delivering extraordinarily high contrast images inside a sleek Fieldscope body. The EDG Fieldscope line's proven Nikon ED (Extra-low Dispersion) glass means sharp, clean edge-to-edge clarity and resolution while the fully multicoated lenses guarantee premium brightness. Larger, 85mm and 65mm lenses allow to get a wider field of view—and both models come complete with the EDG zoom eyepiece, and are compatible using a new group of interchangeable EDG fixed power eyepieces for custom viewing. The EDG Fieldscope line is available within an angled or straight body to accommodate any expedition. "By incorporating many of Nikon's new technologies the new EDG distinctive line of Fieldscopes gives hunters the absolute most suitable choice for long range viewing," said Jon LaCorte Senior Product Marketing Manager. "Combine one of these Fieldscopes by having an EDG binocular and you occur to be ready for almost any hunt on any continent."
Legendary ED (Extra-low Dispersion) Glass Lenses. Deliver the superior sharpness and color correction for unmatched detail resolution
High Grade Optics and Multicoating Technology. Carefully cut and polished glass is coated in multiple layers of anti-reflective compounds for bright resolution brilliant color and uncompromised low-light performance
Eyepieces with Eye Box Technology. From zoom to wide angle, to long eye relief, there are seven different eyepieces to customize your viewing. EDG Fieldscopes are packaged with the zoom eyepiece.
Advanced Apochromat. Even, superior chromatic aberration compensation system
Waterproof/Fogproof. O-ring sealed and dry nitrogen filled to handle the toughest conditions (up to 10minutes submersed at 16.4 ft)
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