6. Mise au point à un rapport prédéterminé

Le rapport de reproduction est le rapport entre la dimension de l’image enregistrée sur le film et la dimension réelle du sujet. Si par exemple l’image de visée représente le cinquiéme du sujet, on dit que le rapport de reproduction est de 1:5.

Pour photographier à un rapport de reproduction donné, utilisez la procédure suivante :

a Tournez la bague de mise au point jusqu’a ce que le nombre

 

désiré sur l’échelle de rapport de reproduction soit aligné avec

 

la ligne de repère des distances.

 

b Visez le sujet, puis changez de place, s’en rapprocher ou s’en

Fr

éloigner, jusqu’à ce que l’image dans le viseur soit partaitement

au point.

 

Pour obtenir le rapport de reproduction adapté à chaque distance

 

de mise au point, consultez le tableau de la page 150.

 

7.Conseils pour la macrophotographie et les travaux de duplication

Le bougé

Le AF-S Micro NIKKOR 60mm f/2,8G ED a un tel grossissement de l’image que le moindre rnouvement pendant la prise de vue donnera un cliché flou. Pour éviter ceci, placez l’appareil photo sur un pied et utilisez un déclencheur souple ou un câble de télécommande.

Les plans très rapprochés

Du fait des grossissements importants rencontrés en macrophotographie, on manque énormément de profondeur de champ. On peut l’améliorer en diaphragmant, mais on doit placer le boîtier de telle sorte que les plans les plus importants du sujet se trouvent dans la même zone de netteté.

• Utilisez la mise au point manuelle lorsque vous utilisez un objectif macro.

Accessoires

Rapport de

Champ couvert (cm)

Distance de mise au

macro

reproduction

point (cm)

 

No. 5T

1/11,1–1,07

26,7 x 40.0 – 2,24 x 3,36

80,6 – 18,5

No. 6T

1/5,7 –1,14

13,6 x 20,5 – 2,11 x 3,16

48,2 – 18,5

No. 5T + 6T

1/4,2 –1,20

10,0 x 15.0 – 2,00 x 3,00

41,2 – 18,5

43

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Image 43
Nikon AF-S user manual Mise au point à un rapport prédéterminé, Rapport de Champ couvert cm
Page 42 Page 44

AF-S specifications

The Nikon AF-S 35mm f/1.4G lens is a highly regarded prime lens designed for Nikon’s FX-format (full-frame) and DX-format (crop sensor) cameras. Known for its exceptional optical performance and versatility, the lens is a popular choice among professional photographers and serious enthusiasts.

One of the standout features of the AF-S 35mm f/1.4G lens is its large maximum aperture of f/1.4. This wide aperture allows for outstanding low-light performance, enabling photographers to capture sharp images even in dimly lit environments. The lens also provides beautiful background bokeh, making it ideal for portraiture and street photography, where subject isolation is desired.

The optical construction of the lens consists of 11 elements in 9 groups, which includes two aspherical lens elements. These aspherical elements help to minimize optical distortions and ensure that image quality remains consistent across the frame. The lens also incorporates Nikon's Super Integrated Coating (SIC), which enhances light transmission and reduces flare and ghosting, resulting in improved contrast and color accuracy.

An essential characteristic of the AF-S 35mm f/1.4G is its Silent Wave Motor (SWM) technology. This innovative motor provides fast, quiet, and precise autofocus capabilities, allowing photographers to lock onto subjects with ease. The lens also features a focus switch that enables seamless switching between automatic and manual focus modes, granting photographers full control over their shooting experience.

Durability is another significant aspect of the lens’ design. The AF-S 35mm f/1.4G features a weather-sealed construction, making it a reliable choice for outdoor photography, even in challenging weather conditions. The lens is designed to withstand dusty environments and moisture, ensuring longevity and performance in a variety of scenarios.

Additionally, the lens has a filter diameter of 67mm, making it compatible with a range of filters such as polarizers and ND filters to enhance creative possibilities. Weighing approximately 600 grams, the lens strikes a balance between portability and robust build quality, making it an excellent companion for various photography styles.

Overall, the Nikon AF-S 35mm f/1.4G lens is a remarkable choice for photographers seeking a high-performance prime lens. Its superb optical quality, fast autofocus, and durable design make it a reliable option for a wide range of photographic applications, solidifying its position as an essential tool in the arsenal of many professionals.
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