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Nikon AF-S user manual Belichtingsfactor, Effectieve f-waardevariatie P, Het diafragma instellen

Models: AF-S

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8. Belichtingsfactor

De f-waarde van een objectief geeft de helderheid van het beeld aan, gevormd door het objectief dat op "oneindig" voor de opnameafstand staat. Hoe hoger de reproductieverhouding, hoe meer de helderheid van het beeld zal afnemen. De werkelijke helderheid van het beeld wordt de "effectieve f-waarde" genoemd en de belichtingscorrectiewaarde voor de verandering van de effectieve f-waarde wordt de "belichtingsfactor" genoemd.

9. Effectieve f-waardevariatie (P. 146)

Hoe hoger de reproductieverhouding met dit objectief is, des te meer zal de helderheid van het beeld op de film (beeldsensor) afnemen en de effectieve f-waarde toenemen (de hoeveelheid licht die door het objectiefdiafragma komt, neemt af). Deze variatie wordt automatisch gecompenseerd door de belichtingsmeter van de camera, zodat de gebruiker de belichting kan bepalen of de TTL-flitsopname bedienen zonder met de belichtingsfactor rekening te houden. De weergegeven f-waarde op het LCD-scherm of de zoeker is de automatisch gecompenseerde waarde.

10. Het diafragma instellen

Stel het diafragma op de camera in. Wanneer de belichtings- (of opname) modus ingesteld is op "A" (diafragmavoorkeuze) of "M"

Nl (handmatig), dan zal de camera zorgen dat de voorafbepaalde f-waarde gelijk blijft (tot ongeveer 1,6 stops), terwijl de effectieve f-waarde verandert met de opnameafstand.

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Page 92
Image 92
Nikon AF-S user manual Belichtingsfactor, Effectieve f-waardevariatie P, Het diafragma instellen
Page 91 Page 93

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.