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Nikon AF-S Factor de exposición, Variación del número f efectivo página, Ajuste de abertura

Models: AF-S

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8. Factor de exposición

El número f de un objetivo indica el brillo de la imagen formada por el objetivo ajustado a distancia de fotografiado “infinito”. A mayor relación de reproducción, mayor la disminución en el brillo de la imagen. El valor de brillo real de la imagen es el llamado “número f efectivo,” y al valor de compensación de la exposición para el cambio del número f efectivo, se le llama “factor de exposición.”

9. Variación del número f efectivo (página 146)

Con este objetivo, a mayor relación de reproducción, más disminuirá el brillo de la imagen en la película (dispositivo de detección de imagen) y aumentará el número f efectivo (disminuirá

Es la cantidad de luz que pasa a través de la abertura del objetivo). Esta variación es compensada automáticamente por el medidor de exposición de la cámara, por tanto el usuario puede determinar la exposición o realizar fotografía con flash TTL sin tener que considerar el factor de exposición.

El número f visualizado en el panel LCD de la cámara o en el visor es el valor compensado automáticamente.

10. Ajuste de abertura

Ajuste la abertura en la cámara. Cuando el modo de exposición

(o fotografiado) se ajusta en “A” (prioridad de abertura automática) o “M” (manual), la cámara controlará para mantener el número

f predeterminado (hasta aproximadamente 1,6 paradas) ya que el número f efectivo varía con la distancia de fotografiado.

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Nikon AF-S user manual Factor de exposición, Variación del número f efectivo página, Ajuste de abertura
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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.