Nikon instruction manual Algo Sobre LOS Nikkor DE LA Serie ED

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Filtro: Sistema interconstruido a rosea de 39mm; se provee tambien portafiltro de gelatina original

Montuia: A bayoneta Nikon

Medida de enlazamiento: 122mm (P = 1mm)

Dimensiones: 134mm0x 460mm longitud (total), 452mm de extension desde la pestafia de montaje

Peso: Aprox. 3300g

Accesorios

Tapa frontal de cuero a presion Tapa trasera del objetivo LF-1 Filtros L37C de rosea, 39mm Portafiltro de gelatina

Otros filtros de roscade 39mm

Filtros de rosea de 122mm Teleconvertidor TC-200 Teleconvertidor TC-300 Teleconvertidor TC-14 Estuche de alumino CT-1203

ALGO SOBRE LOS NIKKOR DE LA SERIE ED

La correction de las aberraciones cromaticas en los objetivos ha estado limitada, mayormente, al uso de tecnicas que llevan a dos longitudes de onda (normalmente la azul y la roja) a un foco comun. Aunque conocidos como acromaticos, los objetivos que empleaban estos disefios muestran cierto grado de dispersion re- sidual indeseable (llamada el "espectro secundario") que limita el contraste de la imagen y la definicion particularmente a abertura plena. Los teleobjetivos son los mas afectos a los efectos nega- tivos de las aberraciones cromaticas, puesto que el espectro se- cundario aumenta con la longitud focal. La serie ED de Nikkors consiste en unos teles o superteles con elementos hechos .de un cristal optico especial desarrollado por Nippon Kogaku llamado cristal de "Dispersion Extraminima (ED)" Aunque las carac- ten'sticas opticas de este nuevo cristal son similares a las del calciofluorita, el cristal ED posee un indice de refraction mas constante a traves de un amplio intervalo de temperaturas y por tanto causara menor alteration del foco. Tambien el cristal ED es mucho mas duro y mas resistente a las rayaduras, siendo posi- ble su uso para los elementos delantero y trasero, con optimas correcciones de aberraciones cromaticas a traves del mayor indice posible de longitudes de onda. Algunos objetivos de la serie ED han sido tan bien corregidos que la definicion de la imagen se extiende uniformemente a la region infrarroja; pues para estos objetivos es innecesario un reenfoque correctivo para fotografia infrarroja. Los demas objetivos tales como el Nikkor ED 800mm f/8 IF se han construido excepcionalmente com- pactos debido al uso de elementos de cristal ED; para estos objetivos, sin embargo, si se necesita un enfoque correctivo para fotografia infrarroja. Sin importar cual sea, cualquier objetivo de la serie ED ofrece definicion excepcional y gran contraste, para una fotografia mas precisa bajo las condiciones mas diversas.

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ED specifications

Nikon ED (Extra-low Dispersion) optics represent a significant advancement in lens technology, specifically designed to enhance image quality by reducing chromatic aberration and improving color accuracy. These specialized glass elements are utilized in various Nikon products, including cameras, binoculars, and telescopes, making them a cornerstone of Nikon's optical engineering.

One of the primary features of Nikon ED glass is its ability to minimize the dispersion of light as it passes through the lens. Traditional glass can produce various wavelengths of light at slightly different focal points, leading to color fringing and a loss of sharpness in photographs. By incorporating ED glass, Nikon lenses achieve better focus across the color spectrum, resulting in more precise, vibrant images with greater detail.

The use of Nikon ED glass also enhances contrast and brightness. The superior optical properties of ED elements allow for increased light transmission, ensuring that images maintain their vibrancy even in challenging lighting conditions. This capability is particularly beneficial for wildlife and landscape photographers who often work in varied environments.

Another hallmark of Nikon ED technology is its durability. Lenses equipped with ED glass are typically constructed with robust materials, making them resistant to the rigors of outdoor use. Weather-sealed designs further protect against elements such as dust and moisture, ensuring reliable performance in a wide range of conditions.

In addition to its optical benefits, Nikon ED technology also incorporates advanced coatings, such as anti-reflective coatings, to reduce lens flare and ghosting. This enhancement allows for clearer, more defined images, particularly when shooting in backlit or high-contrast situations.

Nikon's commitment to precision engineering is evident in the meticulous design and manufacturing processes involved in creating ED lenses. Each lens is crafted with stringent quality control measures, ensuring that every product meets Nikon's high standards for performance and reliability.

In summary, Nikon ED technology exemplifies the brand's dedication to delivering superior optical performance. With its unique ability to counteract chromatic aberration, enhance light transmission, and withstand various environmental conditions, Nikon ED lenses are a preferred choice for photographers seeking unparalleled image quality and durability in their optical equipment.