Nikon ED instruction manual Verres DE Visee Recommandes, CARACTERIST1QUES

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VERRES DE VISEE RECOMMANDES

Differents vertex de visee interchangeables peuvent etre montes sur les boftiers Nikon F2 ou F3, qui permettent de faire face a toutes les conditions de prise de vues. Certains d'entre eux sont plus specialement recommandes avec le ED 800mm f/8 IF, comme il apparaft ci-dessous.

Boftier ^"^--—^_^

A/L B C D E

G1 G2 G3 G4 HI

H2 H3 H4 J

K/P

M R

T

F3

®

©

'

©

©

©

©

F2

©

'

©

©

©

©

®

 

•Lorsque Ton adapte le teleconvertisseur TC-200 sur cet objectif, se referer a la table suivante*:

^

Verre

B

C

D

E

Gl G2 G3 G4 HI H2 H3 H4 J

K/P

M R

T

Bor'tier

^ ^ ^ A/L

F3

®

©

0

O

0

®

F2

®

©

o

o ©

®

 

*Un vignettage ou d'autres phenomenes nuisant a la qualite de l'image peuvent se produire.

•Lorsque Ton adapte le teleconvertisseur TC-300 sur cet objectif, se referer a la table suivante:

^^7~~~—~~~^

Verre

B C D

E

Gl G2 G3 G4 HI H2 H3 H4 J

K/P

M R T

Boftier ^~~~~^~~~-^^^A/L

F3

® ©

O o ©

©

®

®

F2

®

©

o o

I

©

 

•Lorsque Ton adapte le teleconvertisseur TC-14 sur cet objectif, se referer a la table suivante:

~"-—-,^^_^

Verre

B c D E

Gl G2 G3 G4 HI

H2 H3 H4 J

K/P

M R

T

Bortier

~ ~ " — - > ^ ^A/L

F3

®

©

o o

©

®

®

F2

®

©

0 o

©

 

 

© = Mise au point excellent ® = Mise au point acceptable

La zone du stigmometre du verre de visee, du microprisme ou du reticule est flou. Faire la mise au point sur la zone depolie.

O = Mise au point acceptable

Un leger vignettage ou phenomene de moire affecte Timage de visee, mais non l'image enregistree sur le film.

= Mesure impossible; ces combinaisons objectif/verre de visee ne permettent que la

mise au point

Les Wanes designent des verres inutilisables.

CARACTERIST1QUES

Focale: 800mm

Ouverture maximale: f/8

 

Construction optique: 9 lentilles en 7 groupes

Champ angulaire: 3°

Echelles des distances: Graduee en metres et en pieds de 10m a l'infini (°°)

Gamme d'ouvertures: f/8 ~ f/32; reperees sur l'echelle principale et Pechelle ADR

Diaphragme: Auto

20

Image 20
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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.